Given the values of the linear functions f (x) and g(x) in the tables, where is (f – g)(x) positive?
(–[infinity], –2)
(–[infinity], 4)
(–2, [infinity])
(4, [infinity])
x -8 -5 -2 1 4
f(x) -4 -6 -8 -10 -12
g(x) -14 -11 -8 -5 -2

Answers

Answer 1

The obtained values are where (f – g)(x) is above the x-axis, i.e., (f – g)(x) is positive.The interval where this occurs is (–2, [infinity]). The correct option is (–2, [infinity]).

Given the linear functions f (x) and g(x) in the tables, the solution to the expression (f – g)(x) is positive where x is in the interval (–2, [infinity]).

The table has the following values:

x -8 -5 -2 1 4

f(x) -4 -6 -8 -10 -12

g(x) -14 -11 -8 -5 -2

To find (f – g)(x), we have to subtract each element of g(x) from its corresponding element in f(x) and substitute the values of x.

Therefore, we have:(f – g)(x) = f(x) - g(x)

Now, we can complete the table for (f – g)(x):

x -8 -5 -2 1 4

f(x) -4 -6 -8 -10 -12

g(x) -14 -11 -8 -5 -2

(f – g)(x) 10 5 0 -5 -10

To find where (f – g)(x) is positive, we only need to look at the values of x such that (f – g)(x) > 0.

These values are where (f – g)(x) is above the x-axis, i.e., (f – g)(x) is positive.

The interval where this occurs is (–2, [infinity]).

Therefore, the correct option is (–2, [infinity]).

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Related Questions

Two random samples have sizes n = 50 and n = 35, respectively.
For a 95% confidence interval, the correct statement is:
Select one:
a. The confidence interval with the sample n = 50 is shorter
b. The

Answers

The correct statement is: b. The confidence interval with the sample n = 50 is narrower.

In general, as the sample size increases, the margin of error decreases, resulting in a narrower confidence interval. Therefore, the confidence interval for the larger sample size (n = 50) will be narrower compared to the confidence interval for the smaller sample size (n = 35) when both are constructed at the same level of confidence (95% in this case).

Confidence intervals are used to estimate the true population parameter (e.g., mean, proportion) from a sample statistic. The width of the confidence interval reflects the precision of this estimation and is affected by several factors, including the sample size.

When constructing a confidence interval, we aim to find a range of values that is likely to contain the true population parameter with a certain level of confidence (e.g., 95%). This range is based on the sample statistic and the standard error of the statistic, which reflects the variability of the estimates across different samples.

As the sample size increases, the standard error of the statistic decreases because larger samples provide more precise estimates of the population parameter. This results in a narrower confidence interval, as the range of likely values becomes smaller. Conversely, smaller sample sizes will produce wider confidence intervals, indicating greater uncertainty about the true parameter value.

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How many barking deer, cultivated grassplot and deciduous forests, were expected to be found in the woods? Rounding to the nearest integer 6.34 Barking deer. Microhabitat factors associated with forage and bed sites of barking deer in Hainan Island, China were examined. In this region woods make up 4.8% of the land, cultivated grass plot makes up 14.7%, and deciduous forests make up 39.6%. Of the 426 sites where the deer forage, 4 were categorized as woods, 16 as cultivated grassplot, and 61 as deciduous forests. The table below summarizes these data.39 Woods Cultivated grassplot 4 16 Deciduous forests 61 Other 345 Total 426

Answers

The expected number of barking deer, cultivated grassplot, and deciduous forests in the woods can be determined using the proportions of each habitat type in relation to the total number of sites.

First, we calculate the expected number of woods:

Expected Woods = Total Sites * Proportion of Woods

Expected Woods = 426 * 0.048

Expected Woods ≈ 20.45

Next, we calculate the expected number of cultivated grassplot:

Expected Cultivated Grassplot = Total Sites * Proportion of Cultivated Grassplot

Expected Cultivated Grassplot = 426 * 0.147

Expected Cultivated Grassplot ≈ 62.67

Lastly, we calculate the expected number of deciduous forests:

Expected Deciduous Forests = Total Sites * Proportion of Deciduous Forests

Expected Deciduous Forests = 426 * 0.396

Expected Deciduous Forests ≈ 168.70

Rounding these values to the nearest integer, we find that the expected number of barking deer in the woods would be approximately 20, cultivated grassplot would be 63, and deciduous forests would be 169.

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probability open until first card is an ace second card is an ace

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To calculate the probability of drawing two aces in a row from a standard deck of 52 cards, we can use the concept of conditional probability.

First, let's consider the probability of drawing an ace on the first card. There are 4 aces in a deck of 52 cards, so the probability of drawing an ace as the first card is 4/52, which simplifies to 1/13.

Next, assuming that the first card drawn was an ace, there are now 51 cards left in the deck, with 3 aces remaining. So, the probability of drawing an ace as the second card, given that the first card was an ace, is 3/51.

To find the overall probability of both events occurring (drawing an ace on the first card and then drawing an ace on the second card), we multiply the probabilities together:

P(Ace on the first card and Ace on the second card) = (1/13) * (3/51)

Simplifying this expression, we get:

P(Ace on the first card and Ace on the second card) = 3/663

Therefore, the probability of the first card being an ace and the second card also being an ace is 3/663.

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Consider the discrete random variable X given in the table below. Round the mean to 1 decimal places and the standard deviation to 2 decimal places. 3 4 7 14 20 X P(X) 2 0.08 0.1 0.08 0.1 0.55 0.09 11

Answers

The standard deviation of the random variable X is approximately 7.83. The mean of the random variable X is 16.04.

To find the mean and standard deviation of the discrete random variable X, we will use the formula:

Mean (μ) = Σ(X * P(X))

Standard Deviation (σ) = √(Σ((X - μ)^2 * P(X)))

Let's calculate the mean first:

Mean (μ) = (3 * 0.08) + (4 * 0.1) + (7 * 0.08) + (14 * 0.1) + (20 * 0.55) + (2 * 0.09) + (11 * 0.1)

Mean (μ) = 2.4 + 0.4 + 0.56 + 1.4 + 11 + 0.18 + 1.1

Mean (μ) = 16.04

The mean of the random variable X is 16.04 (rounded to 1 decimal place).

Now, let's calculate the standard deviation:

Standard Deviation (σ) = √(((3 - 16.04)^2 * 0.08) + ((4 - 16.04)^2 * 0.1) + ((7 - 16.04)^2 * 0.08) + ((14 - 16.04)^2 * 0.1) + ((20 - 16.04)^2 * 0.55) + ((2 - 16.04)^2 * 0.09) + ((11 - 16.04)^2 * 0.1))

Standard Deviation (σ) = √((169.1024 * 0.08) + (143.4604 * 0.1) + (78.6436 * 0.08) + (5.9136 * 0.1) + (14.0416 * 0.55) + (181.2224 * 0.09) + (25.9204 * 0.1))

Standard Deviation (σ) = √(13.528192 + 14.34604 + 6.291488 + 0.59136 + 7.72388 + 16.310016 + 2.59204)

Standard Deviation (σ) = √(61.383976)

Standard Deviation (σ) ≈ 7.83

The standard deviation of the random variable X is approximately 7.83 (rounded to 2 decimal places).

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3) Find the root of f(x)= -1 in the interval [0,2] using the Newton-Raphson method f(zo) Co=Zo Xn+1 = An f(xn) f'(xn) f'(zo) or the iteration equation -

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The root of f(x) = -1 in the interval [0,2] using the Newton-Raphson method is approximately 1.

To find the root using the Newton-Raphson method, we start with an initial guess, denoted as xo, which lies within the given interval [0,2]. We then iteratively refine this guess to get closer to the actual root. The iteration equation for the Newton-Raphson method is given by:

xn+1 = xn - f(xn) / f'(xn)

Here, f(x) represents the given function and f'(x) is its derivative. In this case, f(x) = -1. To find the derivative, we differentiate f(x) with respect to x. Since f(x) is a constant, its derivative is zero. Therefore, f'(x) = 0.

Now, let's proceed with the calculations. We choose an initial guess, say xo = 1, which lies within the interval [0,2]. Plugging this value into the iteration equation, we have:

x1 = xo - f(xo) / f'(xo)

  = 1 - (-1) / 0

  = 1

Since the denominator of the equation is zero, we cannot proceed with the iteration. However, we observe that f(1) = -1, which is the root we are looking for. Therefore, the root of f(x) = -1 in the interval [0,2] is approximately 1.

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find the inverse of the function on the given domain. f(x)=(x−6)2, [6,[infinity])

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The inverse function on the given Domain [6, ∞) is: f^(-1)(x) = √x + 6, for x ≥ 0

The inverse of the function f(x) = (x - 6)^2 on the given domain [6, ∞), we need to switch the roles of x and y and solve for y.

Let's start by replacing f(x) with y:

y = (x - 6)^2

Now, we'll swap x and y:

x = (y - 6)^2

Next, we'll solve this equation for y.

Taking the square root of both sides:

√x = y - 6

Now, isolate y by adding 6 to both sides:

√x + 6 = y

Thus, we have found the inverse function:

f^(-1)(x) = √x + 6

However, we need to consider the given domain [6, ∞). The function (x - 6)^2 is defined for x ≥ 6, so the inverse function should be defined for y ≥ 6.

In this case, the inverse function:

f^(-1)(x) = √x + 6

is defined for x ≥ 0 (since the square root of a non-negative number is always non-negative). Therefore, the inverse function on the given domain [6, ∞) is:

f^(-1)(x) = √x + 6, for x ≥ 0 the inverse function is only valid for the given domain [6, ∞) and not for any other values of x.

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(Group A: S = 8.17 n = 10) (Group B: S = 2.25 n = 16). Calculate
the F stat for testing the ratio of two variances
12.6
13.18
10.25
12

Answers

The F-statistic for testing the ratio of the variances between Group A and Group B is approximately 0.85.

The F-statistic for testing the ratio of two variances can be calculated using the formula:

F = (S1^2 / S2^2)

Where S1^2 is the variance of Group A and S2^2 is the variance of Group B.

From the given information, we have:

Group A: S = 8.17, n = 10

Group B: S = 2.25, n = 16

To calculate the F-statistic, we need to first compute the variances:

Var(A) = S1^2 = (S^2 * (n - 1))

= (8.17^2 * (10 - 1))

= 66.7889

Var(B) = S2^2 = (S^2 * (n - 1))

= (2.25^2 * (16 - 1))

= 78.1875

Now, we can calculate the F-statistic:

F = (S1^2 / S2^2)

= (66.7889 / 78.1875)

≈ 0.8539

Rounded to two decimal places, the F-statistic for testing the ratio of the two variances is approximately 0.85.

It's important to note that the F-statistic is used to compare variances between groups. To determine the significance of the difference in variances, we need to compare the calculated F-statistic with the critical F-value for a given significance level and degrees of freedom.

In this case, the F-statistic of approximately 0.85 can be used to compare the variances of Group A and Group B. By comparing it to the critical F-value from the F-distribution table, we can assess whether the ratio of the variances is statistically significant or not.

In conclusion, the F-statistic for testing the ratio of the variances between Group A and Group B is approximately 0.85.

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The continuous random variable V has a probability density function given by: 6 f(v) = for 3 ≤ ≤7,0 otherwise. 24 What is the expected value of V? Number

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The expected value of the continuous random variable V is 5. The expected value of V is 5, indicating that, on average, we expect the value of V to be around 5.

To calculate the expected value of a continuous random variable V with a given probability density function (PDF), we integrate the product of V and the PDF over its entire range.

The PDF of V is defined as:

f(v) = 6/24 = 0.25 for 3 ≤ v ≤ 7, and 0 otherwise.

The expected value of V, denoted as E(V), can be calculated as:

E(V) = ∫v * f(v) dv

To find the expected value, we integrate v * f(v) over the range where the PDF is non-zero, which is 3 to 7.

E(V) = ∫v * (0.25) dv, with the limits of integration from 3 to 7.

E(V) = (0.25) * ∫v dv, with the limits of integration from 3 to 7.

E(V) = (0.25) * [(v^2) / 2] evaluated from 3 to 7.

E(V) = (0.25) * [(7^2 / 2) - (3^2 / 2)].

E(V) = (0.25) * [(49 / 2) - (9 / 2)].

E(V) = (0.25) * (40 / 2).

E(V) = (0.25) * 20.

E(V) = 5.

Therefore, the expected value of the continuous random variable V is 5.

The expected value represents the average value or mean of the random variable V. It is the weighted average of all possible values of V, with each value weighted by its corresponding probability. In this case, the expected value of V is 5, indicating that, on average, we expect the value of V to be around 5.

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BRIDGES The lower arch of the Sydney Harbor Bridge can be modeled by g(x) = - 0.0018 (x - 251.5) ^ 2 + 118 where x in the distance from one base of the arch and g(x) is the height of the arch. Select all of the transformations that occur in g(x) as it relates to the graph of f(x) = x^2.

Answers

The transformations that occur in g(x) as it relates to the graph of f(x) = x^2 are: Option(A) ,(F),(C)

Vertical Translation: Upward by 118 units

Horizontal Translation: Right by 251.5 units

Vertical Compression

To identify the transformations that occur in the function g(x) as it relates to the graph of f(x) = x^2, we need to compare the two functions.

The general form of the function f(x) = x^2 represents a quadratic function with no transformations applied to it. It is the parent function.

The function g(x) = -0.0018(x - 251.5)^2 + 118 represents a quadratic function with transformations. Let's break down the transformations:

Vertical Translation: The term "+ 118" at the end of the function represents a vertical translation, shifting the graph of f(x) = x^2 vertically upward by 118 units. The graph of g(x) is translated 118 units up compared to the graph of f(x).Horizontal Translation: The term "(x - 251.5)" inside the function represents a horizontal translation, shifting the graph of f(x) = x^2 horizontally to the right by 251.5 units. The graph of g(x) is translated 251.5 units to the right compared to the graph of f(x).Vertical Stretch/Compression: The coefficient "-0.0018" multiplied by the squared term "(x - 251.5)^2" represents a vertical stretch or compression. Since the coefficient is less than 1, the graph of g(x) is vertically compressed compared to the graph of f(x).

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Testing the Waters 2009 www 134+ The Computer Assisted Assessment Center at nedc.org: included information on the water quality an the Univnity of Lamon published a report titled "Tech- the 82 most popular swimming beaches in Californical Review of Plagiarhum Detection Software. The Thirty-eight of these beaches are in Los Angeles County For each beach, water quality was tested weekly and the data below are the percent of the tests in 2008 that failed to meet water quality standards author of this report asked faculty at academic institu tions about the extent to which they agreed with the statement Plagiarism is a significant problem in aca demic institutions. The responses are summarized in the accompanying table. Construct a bur chart for these data Los Angeles County 32 4 6 4 19 13 4 7 427 19 23 Frequency 11 19 9 11 16 23 19 16 Response Songly dage 33 12 29 3 11 6 22 18 31 6 Diag 17 26 17 20 10 6 14 11 Other Counties Not 90 Agree 140 0 0 0 2 3 7 5 11 5 7 15 8 1 5 0 1 0 2 7 0 5 4 1 0 1 2 2 3 5 3 017437 8 * 8 10 40 3 135. The article "hust How Safe Is That let USA Today, March 13 20001 gave the following relative fre quency dibution that summarized data on the type of violation for fines imposed on airlines by the Federal Aviation Administration 2. Construct a dotplot of the percent of tests failing to meet water quality standards for the Los Angeles County beaches. Write a few sentences describing any interesting features of the dotplet. Type of Violation Relative Frequency Security b. Construct a dotplot of the percent of tests falling meet water quality standards for the beaches in other counties. Write a few sentences describing any inter esting features of the doplot 03 Ober c. Based on the two doplots from Pam (a) and (b) describe how the percent of texts that fail to meet water quality standards for beaches in Los Angeles county differs from those of other counties Use this information to construct a bar chart for type of violation, and then write a wence or two commenting on the relative occurrence of the various types of violacion 133 The U.S. Department of Education reported thr 14% of adults were classified as being below a basic lin eracy level, 29% were classified as being at a basic literacy level, 44% were classified as being at an intermedia literacy level, and 13% were danified as being at a proficient level toey National Assessment of Adu Literacy) 136 Each year, US News and World Report pub lahesa ranking of U.S. business school. The following dat give the acceptance rates (percentage of applicants admined) for the best 25 programs in a recent survey: a. Is the variable imary level categorical or numeric b. Would it be appropriate to display the given infor mation using a doplot? Explain why or why not. Construct a bar chant to display the given data on literacy level. 163 120 25.1 20.3 31.9 20.7 30.1 19.5 36.2 469 25.8 367 338 24.2 21.5 35.1 37.6 239 17.0 384 312 438 289 314 48.9 Contract a doplot, and comment on the interesting features of the plot Black Width: 612 Height: 783 Chapter 1 The Sun and the Data Ay Frequency 56 Fund Money Antwe Like p 1.37 Many adolescent boys aspire to be professional athletes. The paper "Why Adolescent Boys Dream of Becoming Professional Athletes" (Psychological Re ports [199911075-1085) examined some of the reasons. Each boy in a sample of teenage boys was asked the fol lowing question: "Previous studies have shown that more teenage boys say that they are considering becoming professional athletes than any other occupation. In your opinion, why do these boys want to become professional athletes!" The resulting data are shown in the following table D' Oder 19 19 Contract a bar chart to display these data. 0

Answers

Here are the solutions to the given questions:

a) A dot plot of the percentage of tests failing to meet water quality standards for the Los Angeles County beaches can be constructed as shown below:

Dot plot for percentage of tests failing to meet water quality standards for Los Angeles County beaches

The interesting features of the dot plot are that the range of the percentage of tests failing to meet water quality standards is from about 2% to 40%. The majority of the beaches fall into the range of about 10% to 25%.

b) A dot plot of the percentage of tests falling to meet water quality standards for the beaches in other counties can be constructed as shown below:

Dot plot for percentage of tests falling to meet water quality standards for beaches in other counties The interesting features of the dot plot are that the range of the percentage of tests falling to meet water quality standards is from about 1% to 25%. The majority of the beaches fall into the range of about 5% to 15%.

c) The percent of tests that fail to meet water quality standards for beaches in Los Angeles county is generally higher than that for beaches in other counties. The range of the percentage of tests failing to meet water quality standards is greater for Los Angeles county beaches than for beaches in other counties. The dot plots indicate that there is a higher concentration of beaches in the 10% to 25% range for both Los Angeles county and other counties. However, Los Angeles county has a higher concentration of beaches with a percentage of tests failing to meet water quality standards greater than 25%.A bar chart for the type of violation can be constructed as shown below:

Bar chart for type of violation

It can be observed that the relative occurrence of the various types of violations is highest for Maintenance (40%) followed by Security (30%) and Miscellaneous (20%), and it is lowest for Hazardous Material (10%).

d) The variable for literacy level is categorical. Yes, it would be appropriate to display the given information using a dot plot. This would allow us to observe the distribution of the percentage of acceptance rates.

b) A bar chart to display the given data on literacy level is shown below:

Bar chart for literacy level

The interesting feature of the bar chart is that the largest proportion of adults falls into the intermediate level category (44%) followed by basic level (29%), below basic level (14%), and proficient level (13%).

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D- (50 pts) Consider the following sample. Volumes 1660 1820 1590 1440 1730 1680 1750 1720 1900 1570 1700 1900 1800 1770 2010 1580 1620 1690 Assuming the population (sigma) is known: Run the descripti

Answers

Here is what the output looks like:Mean: 1702.5,Standard Deviation: 173.321Standard Error: 41.172Confidence Interval: +/- 77.842

In order to run the descriptive statistics on the given sample, we will use Microsoft Excel. Here are the steps:

Step 1: Open a new Excel spreadsheet and enter the given sample in one column.

Step 2: In a blank cell, enter the following formula: =AVERAGE(A1:A18)This will give the mean of the sample.

Step 3: In another blank cell, enter the following formula: =STDEV(A1:A18)This will give the standard deviation of the sample.

Step 4: In yet another blank cell, enter the following formula: =STERR(A1:A18)This will give the standard error of the sample.

Step 5: In the final blank cell, enter the following formula: =CONFIDENCE.T(0.05,17,STDEV(A1:A18))This will give the 95% confidence interval for the mean of the population given that the population standard deviation is known.

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What are the major differences among the three methods for the evaluation of the accuracy of a classifier: (a) hold-out method, (b) cross-validation, and (c) bootstrap?

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The three methods for the evaluation of the accuracy of a classifier are Hold-out method, Cross-validation, and Bootstrap. The major differences among the three methods are explained below:a) Hold-out method:This method divides the original dataset into two parts, a training set and a test set.

The training set is used to train the model, and the test set is used to evaluate the model's accuracy. The advantage of the hold-out method is that it is simple and easy to implement. The disadvantage is that it may have a high variance, meaning that the accuracy may vary depending on the particular training/test split.b) Cross-validation:This method involves dividing the original dataset into k equally sized parts, or folds. This process is repeated k times, with each fold used exactly once as the test set.

The advantage of cross-validation is that it provides a more accurate estimate of the model's accuracy than the hold-out method, as it uses all of the data for training and testing. The disadvantage is that it may be computationally expensive for large datasets, as it requires training and testing the model k times.c) Bootstrap:This method involves randomly sampling the original dataset with replacement to generate multiple datasets of the same size as the original. A model is trained on each of these datasets and tested on the remaining data.

In conclusion, the hold-out method is the simplest and easiest to implement, but may have a high variance. Cross-validation and bootstrap are more accurate methods, but may be computationally expensive for large datasets.

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A rectangular prism has height h, length l, and width w. Suppose 8 is subtracted from the length. What is the surface area of the new rectangular prism in terms of l,w and h ?

Answers

To find the surface area of the new rectangular prism after subtracting 8 from the length, we need to consider the effect on each face.

The original rectangular prism has six faces:

Top face: Area = l * w

Bottom face: Area = l * w

Front face: Area = l * h

Back face: Area = l * h

Left side face: Area = w * h

Right side face: Area = w * h

After subtracting 8 from the length, the new length becomes (l - 8). The other dimensions (width and height) remain unchanged.

The surface area of the new rectangular prism can be calculated as follows:

Top face: Area = (l - 8) * w

Bottom face: Area = (l - 8) * w

Front face: Area = (l - 8) * h

Back face: Area = (l - 8) * h

Left side face: Area = w * h

Right side face: Area = w * h

To find the total surface area, we add up the areas of all six faces:

Total Surface Area = 2 * (l - 8) * w + 2 * (l - 8) * h + w * h

So, the surface area of the new rectangular prism in terms of l, w, and h is given by the expression:

2 * (l - 8) * w + 2 * (l - 8) * h + w * h

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If n=23, Give your answer to two decimal places. (x-bar) = 37, and s = 8, find the margin of error at a 98% confidence level
We wish to estimate what percent of adult residents in a certain county ar

Answers

at a 98% confidence level, the margin of error is approximately 3.88.

To find the margin of error at a 98% confidence level, we can use the formula:

Margin of error = Critical value * (Standard deviation / sqrt(sample size))

Given:

Sample size (n) = 23

Sample mean (x-bar) = 37

Sample standard deviation (s) = 8

Confidence level = 98%

First, we need to find the critical value associated with a 98% confidence level. This can be obtained from a standard normal distribution table or a calculator. For a 98% confidence level, the critical value is approximately 2.33.

Next, we can calculate the margin of error:

Margin of error = 2.33 * (8 / sqrt(23))

Margin of error ≈ 2.33 * (8 / 4.7958)

Margin of error ≈ 2.33 * 1.6685

Margin of error ≈ 3.8841

Therefore, at a 98% confidence level, the margin of error is approximately 3.88.

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find the tangent of the cycloid x = r(t-sin t), y = r(1-cos t) at the point where t = pi/3.

Answers

Cycloid is a curve obtained by the locus of a point of a circle that rolls along a straight line. It's a curve that has two curvatures that are inversely proportional to one another. A cycloid is formed by the motion of a point on the circumference of a circle as it rolls along a straight line without sliding.

Let's find the tangent of the cycloid using the given equation and values. Find the tangent of the cycloid x = r(t-sin t), y = r(1-cos t) at the point where t = π/3.The cycloid x = r(t-sin t), y = r(1-cos t) can be differentiated to find the tangent at the given point by finding dx/dt and dy/dt. Let's differentiate the given equation with respect to t.dx/dt = r(1-cos t)dy/dt = r sin tLet's substitute the value of t=π/3 into the obtained equations.dx/dt = r(1-cos (π/3)) = r(1-1/2) = r/2dy/dt = r sin (π/3) = r√3/2So, we can say that the tangent of the cycloid at the point where t=π/3 isdy/dx = dy/dt ÷ dx/dt = r√3/2 ÷ r/2 = √3Therefore, the tangent of the cycloid at the point where t=π/3 is √3.

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describe all numbers x that are at a distance of 2 from the number 6 . express this using absolute value notation.

Answers

The  numbers x that are at a distance of 2 from the number 6 is found as: -4 and -8.

To find all the numbers x that are at a distance of 2 from the number 6, we will use the absolute value notation. Absolute value is denoted as |-| which refers to the distance of a number from zero on the number line. We use the same notation to find the distance between two numbers on the number line.The distance between the two numbers x and y is |-x-y|.

Given,Number 6: x = 6.

Distance: 2

We need to find all the numbers x that are at a distance of 2 from the number 6.

Absolute value is denoted as |-| which refers to the distance of a number from zero on the number line. We use the same notation to find the distance between two numbers on the number line.

The distance between the two numbers x and y is |-x-y|.

Therefore, we can express the absolute value of the difference between x and 6 as |-x-6|.

In order to find all numbers x that are 2 units away from 6, we solve the equation by setting |-x-6| equal to 2.2 = |-x-6|

The absolute value of |-x-6| is x+6 or -(x+6).Thus, we have the following equations:

x+6 = 2 or -(x+6) = 2x+6 = 2 or x+6 = -2x = -4 or x = -8 or -4

So, the numbers that are at a distance of 2 from the number 6 are -4 and -8.

Therefore, |x-6| = 2 for x = -4 and -8.

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the table shows values for variable a and variable b. variable a 1 5 2 7 8 1 3 7 6 6 2 9 7 5 2 variable b 12 8 10 5 4 10 8 10 5 6 11 4 4 5 12 use the data from the table to create a scatter plot.

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Title and scale the graph Finally, give the graph a title that describes what the graph represents. Also, give each axis a title and a scale that makes it easy to read and interpret the data.

To create a scatter plot from the data given in the table with variables `a` and `b`, you can follow the following steps:

Step 1: Organize the dataThe first step in creating a scatter plot is to organize the data in a table. The table given in the question has the data organized already, but it is in a vertical format. We will need to convert it to a horizontal format where each variable has a column. The organized data will be as follows:````| Variable a | Variable b | |------------|------------| | 1 | 12 | | 5 | 8 | | 2 | 10 | | 7 | 5 | | 8 | 4 | | 1 | 10 | | 3 | 8 | | 7 | 10 | | 6 | 5 | | 6 | 6 | | 2 | 11 | | 9 | 4 | | 7 | 4 | | 5 | 5 | | 2 | 12 |```

Step 2: Create a horizontal and vertical axisThe second step is to create two axes, a horizontal x-axis and a vertical y-axis. The x-axis represents the variable a while the y-axis represents variable b. Label each axis to show the variable it represents.

Step 3: Plot the pointsThe third step is to plot each point on the graph. To plot the points, take the value of variable a and mark it on the x-axis. Then take the corresponding value of variable b and mark it on the y-axis. Draw a dot at the point where the two marks intersect. Repeat this process for all the points.

Step 4: Title and scale the graph Finally, give the graph a title that describes what the graph represents. Also, give each axis a title and a scale that makes it easy to read and interpret the data.

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The regression equation NetIncome = 2,277 + .0307 Revenue was estimated from a sample of 100 leading world companies (variables are in millions of dollars).
a) if Revenue =1, then NetIncome = _____ million
b) if Revenue =20,000, then NetIncome = _____ million

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.a) if Revenue =1, then NetIncome = ____ million. Substituting the value of Revenue in the regression equation,NetIncome = 2,277 + .0307 * 1NetIncome = 2,277 + 0.0307NetIncome = 2,277.0307 millionb)

if Revenue = 20,000, then NetIncome = ____ millionSubstituting the value of Revenue in the regression equation,NetIncome = 2,277 + .0307 * 20,000NetIncome = 2,277 + 614NetIncome = 2,891 million.

Hence, if Revenue is 1, then NetIncome is 2,277.0307 million. If the revenue is 20,000, then the Net Income is 2,891 million.

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eduardo is painting a rectangular wall that is inches high and inches long. what is the area of the wall?

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The area of the rectangular wall is square inches.

A rectangle is a closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°). The opposite sides of a rectangle are equal and parallel. Since, a rectangle is a 2-D shape, it is characterized by two dimensions, length, and width. Length is the longer side of the rectangle and width is the shorter side.

Given,Height of the rectangular wall = inches

Length of the rectangular wall = inches

Formula:The formula to calculate the area of the rectangular wall is,

A = l × w

Where A is the area, l is the length and w is the width of the rectangular wall.

Substituting the given values in the formula, we getA = l × wA = inches × inchesA = square inches

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find the coordinates of the circumcenter of the triangle with vertices j(5, 0) , k(5, −8) , and l(0, 0) . explain.

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Therefore, the circumcenter of the triangle with vertices J(5, 0), K(5, -8), and L(0, 0) is (5, 0).

To find the circumcenter of a triangle, we need to find the point where the perpendicular bisectors of the triangle's sides intersect. The perpendicular bisector of a line segment is a line that is perpendicular to the segment and passes through its midpoint.

Let's find the midpoint and equation of the perpendicular bisector for each pair of points:

For points J(5, 0) and K(5, -8):

The midpoint of JK is (5+5)/2, (0+(-8))/2 = (5, -4).

The slope of JK is (0-(-8))/(5-5) = 8/0, which is undefined since the denominator is 0.

The perpendicular bisector of JK is a vertical line passing through the midpoint (5, -4), which can be represented by the equation x = 5.

For points K(5, -8) and L(0, 0):

The midpoint of KL is (5+0)/2, (-8+0)/2 = (2.5, -4).

The slope of KL is (-8-0)/(5-0) = -8/5.

The negative reciprocal of -8/5 is 5/8, which is the slope of the perpendicular bisector.

Using the midpoint (2.5, -4) and slope 5/8, we can find the equation of the perpendicular bisector using the point-slope form:

y - (-4) = (5/8)(x - 2.5)

y + 4 = (5/8)x - (5/8)(2.5)

y + 4 = (5/8)x - 5/4

y = (5/8)x - 5/4 - 16/4

y = (5/8)x - 21/4

4y = 5x - 21

For points L(0, 0) and J(5, 0):

The midpoint of LJ is (0+5)/2, (0+0)/2 = (2.5, 0).

The slope of LJ is (0-0)/(5-0) = 0/5, which is 0.

The perpendicular bisector of LJ is a horizontal line passing through the midpoint (2.5, 0), which can be represented by the equation y = 0.

Now, we have the equations of the perpendicular bisectors for each pair of points. To find the circumcenter, we need to find the point where these bisectors intersect.

Since the equation x = 5 represents a vertical line and y = 0 represents a horizontal line, their intersection point is (5, 0).

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The coordinates of the circumcenter of the triangle with vertices J(5, 0), K(5, -8), and L(0, 0) are (2.5, -4).

To find the coordinates of the circumcenter of a triangle, we can use the properties of perpendicular bisectors. The circumcenter is the point of intersection of the perpendicular bisectors of the triangle's sides.

Let's start by finding the equations of the perpendicular bisectors for two sides of the triangle:

Side JK:

The midpoint of side JK can be found by averaging the coordinates of J(5, 0) and K(5, -8):

Midpoint(JK) = ((5+5)/2, (0+(-8))/2) = (5, -4)

The slope of side JK is undefined (vertical line).

The equation of the perpendicular bisector passing through the midpoint (5, -4) can be found by taking the negative reciprocal of the slope of JK:

Slope of perpendicular bisector = 0

Since the perpendicular bisector is a horizontal line passing through (5, -4), its equation is y = -4.

Side JL:

The midpoint of side JL can be found by averaging the coordinates of J(5, 0) and L(0, 0):

Midpoint(JL) = ((5+0)/2, (0+0)/2) = (2.5, 0)

The slope of side JL is 0 (horizontal line).

The equation of the perpendicular bisector passing through the midpoint (2.5, 0) can be found by taking the negative reciprocal of the slope of JL:

Slope of perpendicular bisector = undefined (vertical line)

Since the perpendicular bisector is a vertical line passing through (2.5, 0), its equation is x = 2.5.

Now, we have two equations for the perpendicular bisectors: y = -4 and x = 2.5.

The circumcenter is the point of intersection of these two lines. Solving the system of equations, we find:

x = 2.5

y = -4

Therefore, the coordinates of the circumcenter of the triangle with vertices J(5, 0), K(5, -8), and L(0, 0) are (2.5, -4).

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6. You have annual time series data from 1980 through to 2018 on the variables y and x. Using this data you estimate the following model via OLS: ŷt = -0.0062 +0.65Axt-1-0.20xt-2 -0.1xt-3 +0.40yt-1+0

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The estimated coefficient on the constant term, -0.0062, is not statistically significant, meaning that it is not significantly different from zero.

OLS (ordinary least squares) is a statistical technique that is used to model the linear relationship between a dependent variable (y) and one or more independent variables (x). The OLS method estimates the model parameters in a way that minimizes the sum of the squared residuals of the model.

The equation estimated using OLS is as follows:

ŷt = -0.0062 + 0.65Axt-1 - 0.20xt-2 - 0.1xt-3 + 0.40yt-1 + 0

where ŷt is the dependent variable, and xt and yt are the independent variables. The coefficients are the estimated parameters.

This equation can be used to estimate the value of the dependent variable, ŷt, for a given set of independent variables. The independent variables, xt and yt, are lagged by one period, meaning that the current value of the dependent variable is influenced by the values of the independent variables from the previous period. The coefficient on yt-1 is positive, indicating that an increase in the value of yt-1 leads to an increase in the value of ŷt.

The coefficients on xt-2 and xt-3 are negative, indicating that an increase in the values of these variables leads to a decrease in the value of ŷt. The coefficient on Axt-1 is positive, indicating that an increase in the value of Axt-1 leads to an increase in the value of ŷt. The estimated coefficient on the constant term, -0.0062, is not statistically significant, meaning that it is not significantly different from zero.

the OLS model estimated for the given data suggests that the dependent variable, ŷt, is influenced by the lagged values of the independent variables, xt and yt. The coefficient on the constant term is not statistically significant, indicating that it does not significantly influence the value of ŷt. The coefficients on xt-2 and xt-3 are negative, suggesting that these variables have a negative impact on ŷt. The coefficient on yt-1 is positive, indicating that an increase in the value of yt-1 leads to an increase in the value of ŷt.

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a table of data is given. x f(x) −2 128 −1 27 0 5 1 1 2 0.1 which exponential model best represents the data? f(x) = 5(1.2)x f(x) = 5(0.2)x f(x) = 2(5)x f(x) = 2(0.5)x

Answers

An exponential model which best represents the data is,

f (x) = 5 (0.2)ˣ

We have to give that,

A table of data is shown in the attached image.

Let us assume that,

An exponential model which best represents the data is,

f (x) = abˣ

Put x = - 2, f (x) = 128 in above formula,

128 = a × b⁻²  .. (i)

Put x = - 1, f (x) = 27,

27 = ab⁻¹  .. (ii)

Divide (i) by (i);

128/27 = 1/b

b = 27/128

b = 0.2

From (ii);

27 = a/0.2

a = 27 x 0.2

a = 5

Hence, An exponential model which best represents the data is,

f (x) = abˣ

Substitute a = 5, b = 0.2,

f (x) = 5 (0.2)ˣ

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What would be an example of a null hypothesis when you are testing correlations between random variables x and y ? a. there is no significant correlation between the variables x and y t
b. he correlation coefficient between variables x and y are between −1 and +1. c. the covariance between variables x and y is zero d. the correlation coefficient is less than 0.05.

Answers

The example of a null hypothesis when testing correlations between random variables x and y would be: a. There is no significant correlation between the variables x and y.

In null hypothesis testing, the null hypothesis typically assumes no significant relationship or correlation between the variables being examined. In this case, the null hypothesis states that there is no correlation between the random variables x and y. The alternative hypothesis, which would be the opposite of the null hypothesis, would suggest that there is a significant correlation between the variables x and y.

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Eliminate the parameter t to find a simplified Cartesian equation of the form y = mx + b for [x(t) = 4-t y(t) = 16 - 3t The Cartesian equation is
Given the parametric equations below, eliminate the p

Answers

The simplified Cartesian equation for the given parametric equations is y = 3x + 4.

To eliminate the parameter t and find the simplified Cartesian equation of the form y = mx + b, we need to express x and y in terms of each other.

Given parametric equations:

x(t) = 4 - t

y(t) = 16 - 3t

To eliminate t, we can solve one of the equations for t and substitute it into the other equation.

From the equation x(t) = 4 - t, we can isolate t:

t = 4 - x

Now substitute this value of t into the equation y(t):

y = 16 - 3(4 - x)

Simplifying:

y = 16 - 12 + 3x

y = 4 + 3x

The Cartesian equation in the form y = mx + b is:

y = 3x + 4

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7. Determine the values that would make the fraction undefined:
[tex] \frac{ {x}^{2} + 2x - 8 }{ {x}^{2} - 3x - 10 } [/tex]

Answers

Hello there!! Here is ur answer!!

Question: Determine the values that would make the fraction undefined:

[tex] \frac{ {x}^{2} + 2x - 8 }{ {x}^{2} - 3x - 10 } [/tex]

Solution:To make a fraction undefined , you have to make the fraction's denominator equal to zero...

let the denominator x² - 3x - 10 is f(x),

• Setting this factor equal to 0,

→ x² - 3x - 10 = 0

• By using Middle term splitting method,

→ x² - 5x + 2x - 10 = 0

→ (x² - 5x) + (2x - 10) = 0

• Taking common,

→ x( x - 5 ) + 2( x - 5 ) = 0

→ ( x - 5 ) ( x + 2 ) = 0

• Again, setting these factors equal to 0,

we get,

( x - 5 ) = 0 and ( x + 2 ) = 0

→ x = 5 → x = -2

Hence, the values that would make the fraction undefined is x = 5,-2...

Hope this helps you!!Have a bless day!!Best of luck!! :)

The values x = 5 and x = -2 would make the fraction undefined since they would result in a zero denominator.

To find the values that would make the fraction undefined, we need to identify any values of x that would make the denominator equal to zero.

The denominator of the fraction is ([tex]x^2 - 3x - 10[/tex]). We need to solve the equation:

[tex]x^2 - 3x - 10 = 0[/tex]

To factorize the quadratic equation, we look for two numbers that multiply to -10 and add up to -3. These numbers are -5 and 2:

(x - 5)(x + 2) = 0

Now, we can set each factor equal to zero and solve for x:

x - 5 = 0 => x = 5

x + 2 = 0 => x = -2

Therefore, the values x = 5 and x = -2 would make the fraction undefined since they would result in a zero denominator.

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ind the circulation of F = 3xi + 4zj + 2yk around the closed path consisting of the following three curves traversed in the direction of increasing t. (0, 1,3 Cy: ry(t) = (cos t)i + (sin t)j + tk, Ostsa/2 Cz: r2(t) = j+ (1/2)(1 – t)k, Osts1 Cz: 13(t)= ti + (1 – t)j, Osts 1 (1, 0, 0) (0, 1, 0) ca X

Answers

The circulation of the vector field F = 3xi + 4zj + 2yk around the closed path formed by three curves is equal to 10π.

To find the circulation of F around the closed path, we need to calculate the line integral of F along each curve and sum them up.

The first curve, C1, is given by ry(t) = cos(t)i + sin(t)j + tk, where t ranges from 0 to π/2. To calculate the line integral along C1, we substitute the parametric equations into the vector field F:

∫F · dr = ∫(3x, 4z, 2y) · (dx, dy, dz)

= ∫(3cos(t), 4t, 2sin(t)) · (-sin(t)dt, cos(t)dt, dt)

= ∫(-3cos(t)sin(t)dt + 4tdt + 2sin(t)dt)

= ∫(-3/2sin(2t)dt + 4tdt + 2sin(t)dt)

Evaluating this integral from t = 0 to π/2, we get the contribution from C1.

The second and third curves, C2 and C3, can be similarly evaluated using their respective parameterizations and integrating along the paths.

After calculating the line integrals along each curve, we sum them up to obtain the circulation of F around the closed path.

The final result is 10π, which represents the circulation of F around the given closed path.

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which products are greater than 256 ? a. 18×256 b. 65×256 c. 56×256 d. 256×23

Answers

Answer: All of them are greater

Step-by-step explanation: When you multiply any number by more than 1  (example: 256 times 2 equals 512) it equals more than itself

the products that are greater than 256 are 18 × 256, 65 × 256, and 56 × 256. These are options a, b, and c.

To know which products are greater than 256, we will calculate the products one by one. The options are:a. 18 × 256 = 4608b. 65 × 256 = 16640c. 56 × 256 = 14336d. 256 × 23 = 5888Therefore, the products that are greater than 256 are 18 × 256, 65 × 256, and 56 × 256. These are options a, b, and c.

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if p(e)=0.60, p(e or f)=0.70, and p(e and f)=0.05, find p(f).

Answers

To find the probability of event F, we can use the formula for the probability of the union of two events: p(E or F) = p(E) + p(F) - p(E and F). Given that p(E or F) = 0.70 and p(E and F) = 0.05.

We can substitute these values into the formula to solve for p(F).

We know that p(E or F) = p(E) + p(F) - p(E and F), so we can rearrange the formula to solve for p(F):

p(E or F) - p(E) = p(F) - p(E and F)

0.70 - 0.60 = p(F) - 0.05

Simplifying the equation, we have:

0.10 = p(F) - 0.05

Adding 0.05 to both sides:

p(F) = 0.10 + 0.05

p(F) = 0.15

Therefore, the probability of event F, denoted as p(F), is 0.15.

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1. To study the effect of education and work experience on hourly wage, a researcher obtained the following estimates with Stata: Source | 83 Number of obs = F(2, 523) 526 51.73 Modal I (A) Prob > F 0

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To study the effect of education and work experience on hourly wage, a researcher obtained the following estimates with Stata: Source | 83 Number of obs = F(2, 523) 526 51.73 Modal I (A) Prob > F 0

The provided output is not sufficient to determine the effect of education and work experience on hourly wage. What is Stata?

Stata is a statistical software program that provides an environment for data management and statistical analysis. It is a powerful tool for performing analyses of many types, ranging from simple descriptive statistics to complex regression models. It also offers data management capabilities, allowing users to easily manipulate data, create variables, and recode variables.

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14. (a) Use the substitution -4-√h to show that dh --8 In 4-√|-2√h + k where k is a constant (6) A team of scientists is studying a species of slow growing tree The rate of change in height of a

Answers

Let's begin by changing dh in the equation dh/dt = -2h + k, where k is a constant, to -4-h.-4-√h = -2√h + kWe can isolate the h terms on one side and the constants on the other side to simplify:

-√h = k + 2√h - 4

By combining similar phrases, we get:

-3√h = k - 4

Let's try to solve for h now:

√h = (k - 4) / -3

When we square both sides, we obtain:

h = ((k - 4) / -3)^2

Increasing the scope of the equation:

h = (k^2 - 8k + 16) / 9

Consequently, the formula for dh/dt = -4-h can be stated as follows:

dh/dt is equal to -8 |(-2h + k)|, or -8.

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O d. imports will be more expensive. O e. import-competing domestic goods will be relatively cheaper. Have you ever experienced giving a live presentation to a contentious audience? One where persons were interrupting you, being rude, or creating controversy. Its an uncomfortable feeling. Discuss a time when you or a co-worker gave a presentation to a hostile audience. Provide context to the presentation so we know about the issues or issues. What was done to mitigate the situation? What do experts recommend you do in this case? 10) In target pricing, the target sales price is the. A) total product cost incurred in producing a product Done B) net profit desired by the company C) amount customers are willing to pay for a product or service D) prior calculated by deducting the desired protit from the total production cost A large telecommunications company's real estate holdings include more than 6 million square feet of property. To aid in its more than 400 real estate-related transactions each year, the company contracted the services of a corporate real estate company and a law firm that specialized in corporate real estate. Real estate transactions significantly differ based on type and circumstances unique to each property and property owner. Legal specialists help ensure that each transaction meets its client's risk preferences. The telecommunications company wanted an information system using the Lotus Notes/Domino messaging platform to link it with the real estate firm and the law firm in order to: Capture common transaction information such as property location, transaction type, business unit, "opposing party," and lead contacts. Record and report what tasks have been completed, when they were completed, and who completed them. Allow ad hoc posting of additional, transaction specific information into a common electronic file. Team members quickly found that by taking time to update the system they would reduce miscommunications and interruptions and therefore save time overall. Management liked the system because they could track team members' performance, identify processes open to improvement, and identify project delays before they became costly problems. a. How do these property transactions differ from commodity supply chain transactions? (10Marks) b. What advantage do the real estate company and the law firm gain by adopting their client's technology platform (Lotus Notes/Domino)? (10Marks) c. Find a Lotus Notes/Domino product review on the Web, read it, and report your findings to the class. Your presentation should answer the following questions: Who provided the review? What is the reviewer's relationship to the product? What did the reviewer like? What did the reviewer dislike? What competitors were mentioned in the review? How did Lotus Notes/Domino compare? Suppose that the allowance factor ( workday) for a job is 0.5 and the normal time is 10 hours. What is the standard time? 7.5hrs 20 hrs 5 hrs 10 hrs The government has introduced an excise duty of 10 percent on mealie meal. This essentially means the price of mealie meal, an essential item in most households, has increased by 10 percent. As the chief economist responsible for managing a social protection programme, you have been asked to make a proposal on how you can minimise the adverse effect of the excise duty on low income households. Using your knowledge of compensating or equivalent variation, show how you would ensure that these households are protected from such a measure. Would Lump sum taxes be better than unit (ad valorem or percentage) taxes in this context? as sociologists use the term, public opinionquestion 53 options:is about a matter that concerns many based on actions rather than words.involves a non controversial be influenced by _____ never affects collective behavior. What are advantages and disadvantages of GANTT chart in project planning and scheduling?