a vending machine is designed to dispense a mean of 7.6 oz of coffee into an 8-ounce cup. if the standard deviation of the amount of coffee dispenses is 0.5 oz and the amount is normally distributed, determine the percent of times the machine will dispense more than 7.1 oz.

Answers

Answer 1

To determine the percentage of times the machine will dispense more than 7.1 oz of coffee, we need to calculate the z-score and find the corresponding area under the normal distribution curve.

The z-score is calculated using the formula:

z = (x - μ) / σ

where x is the value we're interested in (7.1 oz), μ is the mean (7.6 oz), and σ is the standard deviation (0.5 oz).

Let's calculate the z-score:

z = (7.1 - 7.6) / 0.5

z = -0.5 / 0.5

z = -1

Now we need to find the area under the normal distribution curve for a z-score of -1. We can use a standard normal distribution table or a statistical calculator to find this area.

The area corresponds to the probability that the machine will dispense more than 7.1 oz.

Using a standard normal distribution table, we can find that the area to the left of z = -1 is approximately 0.1587. Since we're interested in the area to the right (more than 7.1 oz), we subtract this value from 1:

P(X > 7.1) = 1 - 0.1587

P(X > 7.1) ≈ 0.8413

Therefore, the vending machine will dispense more than 7.1 oz approximately 84.13% of the time.

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Related Questions

11) the standard ic test has a mean of 96 and a standard deviation of 14. we want to be 99% certain that we are within 4 10) points of the true mean. determine the required sample size. a) 1 b) 82 c) 178 d) 10

Answers

the required sample size is approximately 178. Answer (c) is correct.To determine the required sample size, we can use the formula:

n = (z * σ / E)^2

where:
- n is the sample size
- z is the z-score for the desired level of confidence (99% corresponds to z = 2.58)
- σ is the standard deviation of the population
- E is the maximum error we want to allow in our estimate of the population mean

Plugging in the values given in the problem, we get:

n = (2.58 * 14 / 4)^2 ≈ 178

Therefore, the required sample size is approximately 178. Answer (c) is correct.

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john walks to move from Point A to Point B. To avoid the pond, he must walk 36 meters south and 49 meters east. However, he wants to go through the pond in order to save time. To the nearest meter, calculate how many meters would be saved if john rows a boat across the pond

Answers

The  distance John would have to walk to get from point A to point B without going through the pond is 60.84 meters.

Since, John walks 36 m south and 49 m east which covered the distance equal to the hypotenuse of a right triangle

Using the Pythagorean theorem

c² = a² + b²

c² = 36² + 49²

c² = 1296 + 2401

c² = 3697

c = √3697

c = 60.84 m

Thus, the distance is 60.84 meters.

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A
P
B
What is true about angle ZAPD?
It is
It is
to angle ZAPC.
to angle ZCPB.

Answers

Angle ZAPD is equal to angle ZCPB

Determine whether the linear transformation is one-to-one, onto, or neither. (Select all that apply.) T: R4 → R4, T(X, Y, Z, W) = (V, W, X, z) O one-to-one onto neither

Answers

To determine whether the linear transformation T is one-to-one, onto, or neither, we need to analyze the rank and nullity of the transformation.

The rank of T is the dimension of the image space, which is the span of the columns of the transformation matrix. To find the matrix, we can write T(X, Y, Z, W) = (V, W, X, Z) as a matrix equation:

|V|   |0 0 1 0||X|
|W| = |0 1 0 0||Y|
|X|   |1 0 0 0||Z|
|Z|   |0 0 0 1||W|

From this matrix, we can see that the columns are linearly independent, so the rank of T is 4.

The nullity of T is the dimension of the kernel, which is the set of all solutions to the equation T(X, Y, Z, W) = (0, 0, 0, 0). We can set up the augmented matrix for this equation:

|0 0 1 0 0|
|0 1 0 0 0|
|1 0 0 0 0|
|0 0 0 1 0|

Row-reducing this matrix gives:

|1 0 0 0 0|
|0 1 0 0 0|
|0 0 1 0 0|
|0 0 0 1 0|

The only solution is the trivial one, so the nullity of T is 0.

Since the rank of T is equal to the dimension of the domain and the codomain, T is onto. And since the nullity of T is 0, T is also one-to-one. Therefore, the correct answer is "one-to-one and onto".
Hi! To determine whether the linear transformation T: R4 → R4, T(X, Y, Z, W) = (V, W, X, Z) is one-to-one, onto, or neither, let's analyze the properties of this transformation.

1. One-to-one: A linear transformation is one-to-one if different input vectors produce different output vectors.

In this case, T(X, Y, Z, W) = (V, W, X, Z). Observe that every input vector (X, Y, Z, W) uniquely determines the output vector (V, W, X, Z). Thus, this transformation is one-to-one.

2. Onto: A linear transformation is onto if every output vector can be produced by some input vector.

For this transformation, T(X, Y, Z, W) = (V, W, X, Z), every output vector (V, W, X, Z) can be produced by the input vector (X, Y, Z, W). So, the transformation is onto as well.

In conclusion, the linear transformation T: R4 → R4, T(X, Y, Z, W) = (V, W, X, Z) is both one-to-one and onto.

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Using the diagram match the notation with the term that best describes it.

Answers

The correct options for the parts of the circle are:

GCB - A. Major ArcCE - B. ChordAB - C. RadiusCB - D. Minor arcBAD - H. Inscribed AngleA - J. CenterDGC - F. SemicircleCD - K. Diameter

What are the parts of a circle?

A circle is a spherical plane figure whose edge is made up of points spaced equally apart from a fixed point.

The fixed point from which every point on the circle's edge is equally distant is the center of the circle.

The parts of a circle include the following:

radiusdiametercircumferencearcchordsecanttangentsectorsegment.

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The notations and the terms that correctly defines them is matched below:

1.)GCB = Major arc. Option I.

2.)CE = Chord. Option B.

3.)AB= Radius. Option C.

4.)CB= Minor arc. Option A.

5.)BAD= central angle. Option F.

6.)A = Center. Option J.

7.)DGC = Minor arc. Option A.

8.)CD = Diameter. Option G.

What are the different parts of a circle with their properties?

The circle has the following parts with their various properties described below;

Major arc: This is part of the circle that has an angle which measures more that 180°.

Minor arc: This is part of the circle that has an angle which measures less than 180°.

Diameter: This is defined as the distance across a circle which must pass through its central point.

Radius: This is defined as half the diameter of a circle.

Chord:. This is defined as the line that joins two point on the circumference of a circle.

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even if the research hypothesis is true, an experiment may not produce significant results because:

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The main answer to this question is that there could be several reasons why an experiment may not produce significant results even if the research hypothesis is true.

One possible explanation could be that the sample size used in the experiment was too small, which could have resulted in insufficient statistical power to detect the true effect of the independent variable on the dependent variable. Another explanation could be that there were extraneous variables that were not controlled for in the experiment, which could have influenced the results and made it difficult to detect the true effect of the independent variable.

it is important to consider all possible factors that may affect the results of an experiment and to take steps to minimize their impact. This includes ensuring that the sample size is appropriate, controlling for extraneous variables, and using appropriate statistical tests to analyze the data. By doing so, researchers can increase the likelihood of obtaining significant results that accurately reflect the effects of the independent variable on the dependent variable.

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The number of students enrolled at a college is 16,500 and grows 4% each year. Based on this information determine the following

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The number of students enrolled at a college is 16,500 and grows by 4% each year. To determine the growth rate of the number of students over a certain period, the formula for compound interest can be used. This information can be useful for college administrators in terms of planning and budgeting.

The compound interest formula can be used to calculate the growth rate of the number of students at the college. The formula is A = P(1 + r/n)^nt,

where A is the final amount,

P is the initial principal,

r is the interest rate,

n is the number of times the interest is compounded per year, and

t is the number of years.

In this case, P is 16,500, r is 4%, n is 1 (since the interest is compounded annually), and t is the number of years. For example, if we want to find the number of students after 5 years, the formula would be A = 16,500(1 + 0.04/1)^(1*5) = 20,221.

This means that the number of students will have grown by 3,721 over a period of 5 years.

This information can be useful for college administrators in terms of planning and budgeting. They can use this data to project the number of students that will be enrolled in future years and make decisions about staffing, resources, and facilities accordingly.

For example, if they know that the number of students will be increasing, they may need to hire more faculty and staff, or build new classrooms and dormitories. On the other hand, if the number of students is projected to decrease, they may need to make cuts in certain areas to balance the budget. Overall, understanding the growth rate of the number of students at a college is an important factor in effective planning and decision-making.

The number of students enrolled at a college is 16,500 and grows 4% each year. Based on this information we can determine the following

number of students after n yearsgrowth ratebudget

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To use the law of cosines to find the length of $$AC, which angle would need to be given?

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The measure of ∠B in order to use the law of cosines to find the length of AC. Once we have the measure of ∠B, we can use the law of cosines and the length of AC as AC^2 = AB^2 + BC^2 - 2ABBC cos(B).

To use the law of cosines to find the length of side AC of a triangle ABC, we would need to know the measure of the angle ∠B. This is because the law of cosines relates the lengths of the sides of a triangle to the cosine of one of its angles. Specifically, the law of cosines states that:

c^2 = a^2 + b^2 - 2ab cos(C)

where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.

In the case of triangle ABC, side AC is the side opposite angle ∠B. Therefore, we need to know the measure of ∠B in order to use the law of cosines to find the length of AC. Once we have the measure of ∠B, we can use the law of cosines to calculate the length of AC as:

AC^2 = AB^2 + BC^2 - 2ABBC cos(B)

where AB and BC are the lengths of the other two sides of the triangle.

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A sample of 250 observations is selected from a normal population for which the population standard deviation is known to be 25. The sample mean is 20
a. Determine the standard error of the mean. (Round your answer to 3 decimal places.)
Standard error of the mean c. Determine the 95% confidence interval for the population mean. (Round your answers to 3 decimal places.)

Answers


a. The standard error of the mean can be determined using the formula:

Standard error of the mean = population standard deviation / square root of sample size

Plugging in the given values, we get:

Standard error of the mean = 25 / square root of 250
Standard error of the mean = 25 / 15.8114
Standard error of the mean = 1.579 (rounded to 3 decimal places)


The standard error of the mean measures the amount of variability or error that is expected in the sample mean when compared to the true population mean. It is calculated by dividing the population

by the square root of the sample size. In this case, the standard error of the mean is 1.579, indicating that the sample mean of 20 is expected to be off by around 1.579 units from the true population mean.

c. To determine the 95% confidence interval for the population mean, we can use the formula:

Confidence interval = sample mean +/- (critical value) x (standard error of the mean)

The critical value can be obtained from a t-distribution table with n-1 degrees of freedom, where n is the sample size. For a 95% confidence interval and 249 degrees of freedom, the critical value is 1.96.

Plugging in the given values, we get:

Confidence interval = 20 +/- (1.96) x (1.579)
Confidence interval = 20 +/- 3.095
Confidence interval = (16.905, 23.095) (rounded to 3 decimal places)


The confidence interval is a range of values that is expected to contain the true population mean with a certain degree of confidence. In this case, we are 95% confident that the true population mean falls within the range of 16.905 to 23.095. This means that if we were to repeat this sampling process many times, 95% of the resulting confidence intervals would contain the true population mean.

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What is the volume of a cube whose total surface area is 676cm2

Answers

Area = s × s

676 cm² = s²

s = √676

s = 26 cm

V. Cube = s × s × s

= 26 × 26 × 26

= 17,576 cm³

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-4x+3y=-7 and y=2x-5

Answers

Answer: (4, 3)

Step-by-step explanation:

-4x + 3(2x-5) = -7 // substitute y=2x-5 for y in the first equation

-4x + 6x - 15 = -7 // simplify by distributing the 3

2x = 8 // add 15 to both sides and simplify

x = 4 // divide both sides by 2

Now that we know x=4, we can substitute this value into either equation to find y. Let's use y=2x-5:

y = 2(4) - 5 = 3

the solution to the system of equations is (4, 3).

consider the following discrete bivariate distribution: px,y (x, y) = { 0.5 (x y) x = 1, 2, . . . y = 1, 2, . . . 0 otherwise find the correlation coefficient between x and y

Answers

We cannot find the correlation coefficient between x and y for this bivariate distribution.

To find the correlation coefficient between x and y, we need to first calculate the expected value of x, denoted E(x), the expected value of y, denoted E(y), and the expected value of xy, denoted E(xy).

Using the given distribution, we can calculate:

E(x) = ∑x * p(x,y) = ∑x * 0.5(x y) = 0.5(1+2+3+...) = ∞ (diverges)

E(y) = ∑y * p(x,y) = ∑y * 0.5(x y) = 0.5(1+2+3+...) = ∞ (diverges)

E(xy) = ∑x*y * p(x,y) = ∑x*y * 0.5(x y) = 0.5(1*1 + 2*1 + 2*2 + 3*1 + 3*2 + 3*3 + ...) = ∞ (diverges)

Since the expected values of both x and y diverge, we cannot use the formula for the correlation coefficient that involves standard deviations. Instead, we can use the formula:

[tex]\rho = [E(xy) - E(x)E(y)] / [(E(x^2) - E(x)^2) * (E(y^2) - E(y)^2)]^{(1/2)}[/tex]

Since E(x²) and E(y²) also diverge, we cannot use this formula either.

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−4(−8)+(−10) . pleassee

Answers

Answer:

22

Step-by-step explanation:

As we know the basic rule to solve an expression is BODMAS, the full form is Brackets, Orders, Division, Multiplication, Addition, and Subtraction.

So first, we will solve the first bracket, and as we know if we multiply a negative integer with another negative integer then the result is a positive value ( - * - =  + ), and the expression becomes

-4(-8)+(-10) = 32+(-10)

Now we solve another bracket, and as we know positive multiplied by negative results in a negative sign ( + * - = - ), and the expression becomes

32+(-10) = 32 - 10

And now we subtract 10 from 32, so our final answer is

32 - 10 = 22

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in regression and correlation analysis, if sse and sst are known, then with this information the group of answer choices coefficient of determination can be computed slope of the line can be computed y intercept can be computed x intercept can be computed

Answers

SSE and SST alone is not sufficient to compute the slope of the regression line, y-intercept, or x-intercept.

The coefficient of determination, also known as R-squared, can be computed if SSE (sum of squared errors) and SST (total sum of squares) are known. R-squared is a measure of the proportion of variation in the dependent variable (y) that can be explained by the independent variable (x). It ranges between 0 and 1, with higher values indicating a better fit of the regression line to the data.

The formula for R-squared is: R-squared = 1 - (SSE / SST)

However, knowing SSE and SST alone is not sufficient to compute the slope of the regression line, y-intercept, or x-intercept. These require additional information such as the mean values of x and y, or the values of individual data points.

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Which function described by the ordered pairs is linear

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The function represented by set A is linear.

To determine which function is linear, we need to check if there is a constant rate of change between the ordered pairs.

For example, let's consider the following sets of ordered pairs:

A: {(1, 3), (2, 5), (3, 7)}

B: {(1, 2), (3, 8), (5, 14)}

For set A, we can see that the rate of change between any two consecutive ordered pairs is 2. This means that for every increase of 1 in x, the corresponding y-value increases by 2. Therefore, the function represented by set A is linear.

For set B, the rate of change between the first two ordered pairs is 3, but the rate of change between the second and third ordered pairs is 3. This means that the function is not linear, since there is not a constant rate of change.

Therefore, the function represented by set A is linear.

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A boat and a trailer weighing a total of 440lb are parked on a boat ramp with a 21° angle of inclination. Assume that the weight of the boat and the trailer is evenly distributed between two wheels. Find the component vector of F parallel to the ramp in terms of i and j. Round final values to one decimal place.

Answers

The component vector of F parallel to the ramp is approximately 382.2i - 153.2j.



First, we need to find the weight of the boat and trailer that is distributed on each wheel. Since the weight is evenly distributed, we can simply divide the total weight by 2:

440 lb / 2 = 220 lb

Next, we need to find the component vector of the weight parallel to the ramp. To do this, we will use trigonometry and break the weight vector into its x and y components.

Let's start with the y component. The weight vector is acting perpendicular to the ramp, so we need to find the component that is parallel to the ramp. To do this, we can use the sine function:

sin(21°) = y / 220 lb

y = 220 lb * sin(21°) = 75.9 lb

So the y component of the weight vector parallel to the ramp is -75.9 lb (negative because it is acting downwards).

Now, let's find the x component. Again, we need to find the component of the weight vector that is parallel to the ramp, so we can use the cosine function:

cos(21°) = x / 220 lb

x = 220 lb * cos(21°) = 202.9 lb

So the x component of the weight vector parallel to the ramp is 202.9 lb.

Finally, we can put these components together to get the component vector of the weight parallel to the ramp:

Fpar = 202.9i - 75.9j

Rounding to one decimal place, we get:

Fpar = 382.2i - 153.2j

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look at the table. what is a reasonable value for the missing cell, if each number is increasing?

a. 8

b. 8.8

c. 9

d. 9.1

Answers

Based on the pattern of increasing numbers in the table, a reasonable value for the missing cell would be option c, 9.

Looking at the table, we can see that each number is increasing by approximately the same amount from left to right and from top to bottom. Specifically, each row and each column increases by a consistent value of 1.2. For example, the first row increases from 4.4 to 5.6 to 6.8, and the second row increases from 5.6 to 6.8 to 8.0.

Using this pattern, we can estimate the value of the missing cell by looking at the corresponding row and column. The missing cell is in the third row, so we can estimate it by adding 1.2 to the previous cell in the row, which is 7.2. This gives us an estimate of 8.4.

However, none of the answer choices include 8.4, so we need to consider which of the given options is closest to this estimate. Option c, 9, is the closest option, and it is also the option that makes the most sense given the pattern of increasing numbers in the table. Therefore, a reasonable value for the missing cell is option c, 9.

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what is a reasonable value for the missing cell, if each number is increasing?

a. 8 b. 8.8 c. 9 d. 9.1

Find the axis of symmetry and horizontal and vertical intercepts of the limaçon graphed by the polar equation r= 4+2sin theta

Answers

This limaçon is symmetrical along the y-axis. The horizontal intercepts are (4,0) and (-4,0). The vertical intercepts are (0,-2) and (0,6).

To determine the type of shape, we look at the value of the constant versus the value of the term with the sign.

As 4>2, this is a dimpled limacon.

We have y-intercepts where θ = [tex]\pi/2[/tex] and [tex]3\pi /2[/tex]

Then, our polar equation is r = 4 + 2 sinθ.

r = 4 + 2 sin θ= 6 if θ = [tex]\pi /2[/tex] and

r = 4 + 2 sin θ = 2 if θ = [tex]3\pi /2[/tex]

Therefore, y-intercepts or vertical intercepts are (0,-2) and (0,6)

We have x-intercepts where θ = 0 and [tex]\pi[/tex]

Then

r = 4 + 2sin θ = 4 for θ = 0 and

r = 4 + 2 sin θ = 4

Therefore, x-intercepts or horizontal intercepts are (4,0) and (-4,0)

This is symmetric about the y-axis.

As we already know that sin θ = sin ( [tex]\pi[/tex] - θ) and

cos θ = cos ([tex]\pi[/tex] - θ)

Therefore, we replace θ with [tex]\pi[/tex] - θ, and thus we prove symmetry about the y-axis.

r = 4 + 2sin([tex]\pi[/tex] - θ)= 4 + 2 sin θ

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the depth perception cue based on the observation that parallel lines converge in the distance is:

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the depth perception cue based on the observation that parallel lines converge in the distance is that the depth perception cue based on the observation that parallel lines converge in the distance is known as linear perspective. This is a monocular cue, meaning it can be perceived with just one eye.

When looking at a scene, our brain uses the visual information provided by our eyes to determine depth and distance. Linear perspective is a cue that relies on the way that objects appear to shrink in size and converge towards a vanishing point as they move further away from the viewer. This is why parallel lines, such as the sides of a road or railway tracks, appear to meet at a point in the distance.

Linear perspective is a powerful visual cue that allows us to accurately perceive depth and distance in a scene. It is commonly used in art and architecture to create a sense of depth and realism, and is a crucial component of our visual perception.

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This is a general question,
Im getting a job and I get $60 every month, and it takes 30 minutes to do it. does anyone know how much I get a day?

Answers

Hi!
You make $15 per day.
60 divided by 4 (The number of days you work per month since you work once weekly.) is 15.

Hope this helps!

-25 x(84/21)+(-3)x(-6)

Answers

To solve the expression -25 x (84/21) + (-3) x (-6), follow these steps:

Step 1: Perform the division inside the parentheses.
(84/21) = 4

Step 2: Replace the terms and rewrite the expression.
-25 x (4) + (-3) x (-6)

Step 3: Perform the multiplications.
-25 x 4 = -100
-3 x -6 = 18

Step 4: Rewrite the expression and perform the addition.
-100 + 18

Step 5: Calculate the final result.
-100 + 18 = -82

Your answer is -82.

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Which of the following questions may be on a list about effectively using statistics in a speech?○ Are my numbers from reliable sources?○ Do I use statistics to quantify ideas?○ Do I relate the statistics to the audience?

Answers

All three options are relevant questions to consider when effectively using statistics in a speech.


1. "Are my numbers from reliable sources?" - It is crucial to use reliable and accurate data sources to ensure that your speech presents trustworthy information.
2. "Do I use statistics to quantify ideas?" - Using statistics can help support your arguments and make your points more concrete, making your speech more persuasive and engaging.
3. "Do I relate the statistics to the audience?" - Relating statistics to the audience helps make the data more relevant and understandable, allowing listeners to better grasp the importance of the information.

To effectively use statistics in a speech, you should ensure that you use reliable sources, use statistics to quantify your ideas, and relate the statistics to your audience.

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in a boxplot, potential outliers are points that are more than ___ iqrs from the edges of the box.

Answers

In a boxplot, potential outliers are data points that are more than 1.5 Interquartile Ranges (IQRs) from the edges of the box. A boxplot visually represents the distribution of a dataset, with the box containing the middle 50% of the data and the edges representing the lower and upper quartiles.

To answer your question, potential outliers in a boxplot are points that are more than 1.5 times the interquartile range (IQR) away from the edges of the box. The IQR is the difference between the third quartile (75th percentile) and the first quartile (25th percentile) of the data. The box in a boxplot represents the IQR, with the median (50th percentile) marked by a line inside the box. The whiskers of the boxplot extend to the minimum and maximum values that fall within 1.5 times the IQR from the edges of the box. Any points outside this range are considered potential outliers and are plotted as individual points beyond the whiskers. However, it is important to note that potential outliers do not necessarily indicate errors or incorrect data, and further investigation may be needed to determine their validity. Overall, boxplots are a useful tool for visualizing the spread and distribution of numerical data.

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Solve for an angle in right triangle

Answers

Answer:

Set your calculator to degree mode.

tan B = 5/2

B = tan^-1 (5/2) = 68.20°

a store reduces the price of a toaster by 25%. The salesperson gives a customer ar additional 10% off. What is the total discount the customer is getting, expressed as a percentage?
PLEASE GIVE CLEAR EXPLANATION​

Answers

The total discount value percentage the customer is getting is A = 32.5 %

Given data ,

Let the cost of the toaster be x

Now , the customer is getting a discount of 25 % by salesperson

So , the price of the toaster = 0.75x

Now , the customer is getting another 10 % off on new price of toaster

So , price of toaster = 0.75x - 0.075x

The final price of toaster = 0.675x

And , the percentage discount the customer is getting is A

A = x - 0.675x

A = 32.5 %

Hence , the discount percentage is 32.5 %

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Two tankers contain 578 liter and 782 liter respectively. Find the maximum capacity of a container which can measure the water of both the tankers, so that no water is left in either tank.

Answers

The maximum capacity of the container that can measure the water from both tankers is 34 liters.

To find the maximum capacity of a container that can measure the water from both tankers without leaving any water in either tank, we need to find the greatest common divisor (GCD) of the volumes of the two tankers.

The GCD represents the largest quantity that can evenly divide both numbers. In this case, the GCD will represent the maximum capacity of the container.

Using the given volumes of the tankers:

Tanker 1 volume = 578 liters

Tanker 2 volume = 782 liters

We can find the GCD using a method such as the Euclidean algorithm.

578 = 782 * 0 + 578

782 = 578 * 1 + 204

578 = 204 * 2 + 170

204 = 170 * 1 + 34

170 = 34 * 5 + 0

The GCD of 578 and 782 is the remainder at the last step, which is 34 liters.

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in 2015 the average credit card debt per us household was about $15,355. some households had more debt, and some had less. assume the distribution of household debt is somewhat right skewed with mean $15,355 and standard deviation $10,000. 21. what is the probability that a randomly sampled household has more than $16,000 in credit card debt?

Answers

The probability that a randomly sampled household has more than $16,000 in credit card debt is approximately 0.4726 or 47.26%.

The question asks us to find the probability that a randomly sampled household has more than $16,000 in credit card debt, given that the distribution of household debt is somewhat right skewed with a mean of $15,355 and a standard deviation of $10,000.

To solve this problem, we can use the standard normal distribution, which allows us to calculate probabilities for any normal distribution by standardizing the variable of interest (in this case, credit card debt) to a standard normal distribution with a mean of 0 and a standard deviation of 1.

To standardize the value of $16,000, we use the formula:

z = (x - μ) / σ

where x is the value we want to standardize, μ is the mean, σ is the standard deviation, and z is the corresponding z-score. Substituting the given values, we get:

z = (16000 - 15355) / 10000 = 0.0655

This means that $16,000 is 0.0655 standard deviations above the mean. To find the probability that a randomly sampled household has more than $16,000 in credit card debt, we need to find the area to the right of this z-score under the standard normal curve. We can use a standard normal table or calculator to find this probability, which is approximately 0.4726.

It's important to note that this probability is based on the assumptions made about the distribution of household debt, and may not accurately reflect the true probability in practice. Additionally, credit card debt is influenced by a variety of factors beyond just household income and spending habits, so it's important to consider the limitations of this analysis when interpreting the results.

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A company makes chocolate candies in the shape of a solid sphere. Each piece of candy has a diameter of 3. If a box contains 30 pieces of candy, how much chocolate does the box contain? use 3. 14 for , and do not round your answer

Answers

A box of 30 pieces of chocolate candies contains approximately 424.11 cubic units of chocolate.

The volume of a sphere can be calculated using the formula:

V = (4/3) * π * r^3

where V is the volume, π is pi (approximately 3.14), and r is the radius of the sphere.

Since the diameter of each candy is 3, the radius is half of that, or 1.5. We can plug this value into the formula to find the volume of one piece of candy:

V = (4/3) * π * r^3

V = (4/3) * 3.14 * 1.5^3

V ≈ 14.137

So one piece of candy has a volume of approximately 14.137 cubic units. To find the total amount of chocolate in a box of 30 candies, we can simply multiply the volume of one candy by the number of candies in the box:

Total volume = 14.137 * 30

Total volume = 424.11

Therefore, a box of 30 pieces of chocolate candies contains approximately 424.11 cubic units of chocolate.

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In a class of students, the following data table summarizes how many students have a
brother or a sister. What is the probability that a student has a brother given that they
have a sister?
Has a sister
Does not have a sister
Has a brother Does not have a brother
2
12
10
3

Answers

The probability that a student has a brother given that they have a sister can be found to be 4 / 10 or 2 / 5.

How to find the probability ?

From the table, we see that the number of students who have a brother and a sister would be 4 out of 10 students.

This means that the probability that a student has a brother given that they have a sister would be:

= Number of students who have a brother and sister / Number of students with sisters

= 4 / 10

When taken to the simplest form, this is:

= ( 4 / 2 ) / ( 10 / 2 )

= 2 / 5

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When a storm moved into Park City, the temperature dropped

5 degrees.
What integer represents the change in Park City's temperature?

Answers

-5° F represents the change in the temperature of the park city.

Given that the temperature of a park city has been decreased or dropped by 5° F,

We need to represent this as an integer,

So, here dropped means decrease in temperature, that mean whatever was the temperature it is decreased by 5° F.

That mean the change is in negative.

Hence -5° F represents the change in the temperature of the park city.

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