if a tennis ball is dropped from a height of 60 feet, on planet newton takes 3 seconds to hit the ground, what is the gravity on the planet?

Answers

Answer 1

The gravity of the planet is 40/3 or 13.33 feet per second squared.

If a tennis ball is dropped from a height of 60 feet, on planet newton takes 3 seconds to hit the ground, what is the gravity on the planet.

The formula to find out the gravity of a planet is given by:g = 2h/t²Here, h is the height from which the object was dropped, and t is the time taken for the object to hit the ground. Substituting the values in the formula, we get:g = 2 × 60/3² = 2 × 60/9 = 40/3The gravity of the planet is 40/3 or 13.33 feet per second squared. The gravity of the planet is 40/3 or 13.33 feet per second squared.

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Related Questions

Question 5 10+ 8 6 4 2 > 1 4 10 13 16 19 data Based on the histogram above, what is the class width? Class width= What is the sample size? Sample size = Frequency 7
Question 6 < > Predict the shape o

Answers

The values for the class width and sample size as obtained from the histogram are 3 and 30.

Class width refers to the interval used for each class in the distribution. The class interval is always equal across all classes.

From the x-axis of the histogram, the difference between each successive pair of values gives the class width.

Class width = 4 - 1 = 3

The sample size of the data is the sum frequency values of each class.

(2 + 10 + 3 + 6 + 5 + 4) = 30

Therefore, the class width and sample size are 3 and 30 respectively.

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find all the values of x such that the given series would converge. ∑=1[infinity]4(−2) 2

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We are given the series ∑(4(-2)^n) with n starting from 1. We need to find the values of x (or n) for which this series converges.

The given series can be rewritten as ∑(4(-1)^n * 2^n) or ∑((-1)^n * 2^(n+2)).
To determine the convergence of the series, we can analyze the behavior of the terms. Notice that the absolute value of each term, |(-1)^n * 2^(n+2)|, does not approach zero as n increases. The terms do not converge to zero, which means the series diverges.
Therefore, there are no values of x (or n) for which the given series converges. The series diverges for all values of x.
The given series ∑(4(-2)^n) diverges for all values of n. The terms of the series do not approach zero as n increases, indicating that the series does not converge. The alternating series test cannot be applied to this series since it does not alternate signs. Therefore, there are no values of x for which the series converges.


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Let f(x) = ax3 . Calculate f(x+h)−f(x) h for h 6= 0. After you obtain your answer, evaluate it again by setting h = 0.

Answers

To calculate [tex]\frac{{f(x+h) - f(x)}}{h}[/tex] for the function [tex]f(x) = ax^3[/tex], we need to substitute the expressions into the formula and simplify.

[tex]f(x+h) = a(x+h)^3\\\\f(x) = ax^3[/tex]

Now we can calculate the difference:

[tex]f(x+h) - f(x) = a(x+h)^3 - ax^3[/tex]

Expanding [tex](x+h)^3[/tex]:

[tex]f(x+h) - f(x) = a(x^3 + 3x^2h + 3xh^2 + h^3) - ax^3[/tex]

Simplifying:

[tex]f(x+h) - f(x) = ax^3 + 3ax^2h + 3axh^2 + ah^3 - ax^3[/tex]

The terms [tex]ax^3[/tex] cancel out:

[tex]f(x+h) - f(x) = 3ax^2h + 3axh^2 + ah^3[/tex]

Now we can divide by h:

[tex]\frac{{f(x+h) - f(x)}}{h} = \frac{{3ax^2h + 3axh^2 + ah^3}}{h}[/tex]

Canceling out the common factor of h:

[tex]\frac{{f(x+h) - f(x)}}{h} = 3ax^2 + 3axh + ah^2[/tex]

Now, we evaluate this expression again by setting h = 0:

[tex]\frac{{f(x+h) - f(x)}}{h} = 3ax^2 + 3ax(0) + a(0)^2[/tex]

[tex]= 3ax^2[/tex]

Therefore, when we evaluate the expression by setting h = 0, we get [tex]3ax^2[/tex].

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determine whether the relation r on the set of all real numbers is reflexive, symmetric, antisymmetric, and/or transitive, where (x, y) ∈ r if and only if

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Let us consider the relation R on the set of all real numbers. In order to find out whether it is reflexive, symmetric, antisymmetric, and/or transitive, we need to consider the definition of each of these relations and check if the given relation satisfies those conditions.

Reflective relation: A relation R on a set A is said to be reflexive if for every element a ∈ A, (a, a) ∈ R. In other words, a relation is reflexive if every element is related to itself. Symmetric relation: A relation R on a set A is said to be symmetric if (a, b) ∈ R implies (b, a) ∈ R for all a, b ∈ A. In other words, if (a, b) is related, then (b, a) is also related. Antisymmetric relation: A relation R on a set A is said to be antisymmetric if (a, b) ∈ R and (b, a) ∈ R implies a = b for all a, b ∈ A.

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The random variable W = 6 X-4Y-2Z+9 where X, Y and Z are three random variables with X-N(2,2), Y-N(3,4) and Z-N(4,6). The expected value of W is equal to: Number

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The expected value of W is equal to 1. the expected value of the sum of random variables is equal to the sum of their individual expected values.

To find the expected value of the random variable W, which is defined as W = 6X - 4Y - 2Z + 9, we can use the linearity of expectations.

The expected value of a constant multiplied by a random variable is equal to the constant multiplied by the expected value of the random variable. Additionally, the expected value of the sum of random variables is equal to the sum of their individual expected values.

Given that X follows a normal distribution with mean μ₁ = 2 and variance σ₁² = 2, Y follows a normal distribution with mean μ₂ = 3 and variance σ₂² = 4, and Z follows a normal distribution with mean μ₃ = 4 and variance σ₃² = 6, we can calculate the expected value of W as follows:

E[W] = 6E[X] - 4E[Y] - 2E[Z] + 9.

Using the properties of expectations, we substitute the means of X, Y, and Z:

E[W] = 6 * μ₁ - 4 * μ₂ - 2 * μ₃ + 9.

Evaluating the expression:

E[W] = 6 * 2 - 4 * 3 - 2 * 4 + 9.

Simplifying:

E[W] = 12 - 12 - 8 + 9.

E[W] = 1.

Therefore, the expected value of W is equal to 1.

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What is the solution to the following system of equations?
y = x^2 + 10x + 11
y = x^2 + x − 7

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Therefore, the solution to the system of equations is x = -2 and y = -5.

To find the solution to the system of equations:

[tex]y = x^2 + 10x + 11 ...(Equation 1)\\y = x^2 + x - 7 ...(Equation 2)[/tex]

Since both equations are equal to y, we can set the right sides of the equations equal to each other:

[tex]x^2 + 10x + 11 = x^2 + x - 7[/tex]

Next, let's simplify the equation by subtracting [tex]x^2[/tex] from both sides:

10x + 11 = x - 7

To isolate the x term, let's subtract x from both sides:

9x + 11 = -7

Subtracting 11 from both sides gives:

9x = -18

Finally, divide both sides by 9 to solve for x:

x = -18/9

x = -2

Now that we have the value of x, we can substitute it back into either Equation 1 or Equation 2 to find the corresponding value of y. Let's use Equation 1:

[tex]y = (-2)^2 + 10(-2) + 11[/tex]

y = 4 - 20 + 11

y = -5

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X MAT23 Section 11 Angles X Qlades national park Sex + sccunstructure.com/courses/525636/assignments/99849477module_em_id=22362956 Due Wednesday by 11:59pm Points 41 SU22 MAT1323R8VAA Trigonometry Submitting an external tool Homework: MAT1323 Section 1.1 Angles Question 40, 1.1.125 Ates rotating 600 times per min. Through how many degrees does a point on the edge of the tre moins The point on the edge of the tre rotates (Type an integer or a simple traction) Help me solve this View an example Get more help- Previous 0 Available after Jan 2 at 3:5 HW Score: 14.63 points O Points: 0 of 1 Clear all 1

Answers

A point on the edge of the tire rotates through 216000 degrees when the tire rotates 600 times per minute. The answer is 216000.

The solution for the problem is as follows:

To solve this problem, you need to use the formula given below to find out the degree measure of rotation of a point on the edge of the tire:

degree of rotation = (number of rotations per minute) × (degree measure of rotation per rotation)

Given, number of rotations per minute = 600

We need to find the degree of rotation through which a point on the edge of the tire rotates.

This means that we need to find the degree measure of rotation per rotation.

Since the tire is a circle, we know that the degree measure of rotation per rotation is the same as the degree measure of one complete revolution of the circle.

degree measure of rotation per rotation = degree measure of one complete revolution of the circle

The degree measure of one complete revolution of the circle is 360°.

Therefore, degree measure of rotation per rotation = 360°

Now we can use the formula for degree of rotation to find out the answer:

degree of rotation = (number of rotations per minute) × (degree measure of rotation per rotation)

= 600 × 360

= 216000

Therefore, a point on the edge of the tire rotates through 216000 degrees when the tire rotates 600 times per minute. The answer is 216000.

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david+borrowed+$2,500+from+his+local+bank.+the+yearly+interest+rate+is+8%.+if+david+pays+the+full+principle+and+interest+in+the+first+year+of+the+loan,+how+much+money+will+he+pay+to+the+bank?

Answers

The answer is $2700.

To calculate the total amount David will pay to the bank, we need to consider both the principal amount borrowed and the interest accrued over the first year.

The interest can be calculated using the formula:

Interest = Principal * Rate

Where the Principal is $2,500 and the Rate is 8% expressed as a decimal (0.08).

Interest = $2,500 * 0.08 = $200

Therefore, the interest accrued over the first year is $200.

To find the total amount David will pay, we need to add the principal and the interest:

Total payment = Principal + Interest = $2,500 + $200 = $2,700

David will pay a total of $2,700 to the bank if he pays the full principal and interest in the first year of the loan.

David will pay a total of $2,700 to the bank if he pays the full principal and interest in the first year of the loan.

To calculate how much money David will pay to the bank, we need to consider both the principal amount and the interest charged on the loan.

The principal amount borrowed by David is $2,500.

The yearly interest rate is 8%, which means that David will have to pay 8% of the principal amount as interest.

Let's calculate the interest first:

Interest = Principal Amount * Interest Rate

        = $2,500 * (8/100)

        = $200

So, the interest charged on the loan is $200.

To find out the total amount David will pay to the bank, we need to add the principal and interest together:

Total Payment = Principal Amount + Interest

            = $2,500 + $200

            = $2,700

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What are the steps in the sequential approach to forecasting future travel? b. What are the inputs and outputs of each forecasting step? c. What is a link performance function? What role does it play in travel forecasting? d. What is the difference between User Equilibrium and System Optimal route choice formulations? e. What is the Transportation Planning Process?

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The Transportation Planning Process involves goal setting, data analysis, scenario development, and evaluation/selection of alternatives.

What are the steps in transportation planning?

Travel forecasting is the process of estimating future travel demand and patterns. It involves analyzing historical data, developing models, and making predictions for future transportation needs. The steps in travel forecasting include data collection, trend analysis, model development, forecasting, validation, and refinement. Inputs for each step can include historical travel data, socioeconomic factors, and transportation network information. Outputs include forecasts of travel demand represented as estimates, maps, or visualizations.

A link performance function is a mathematical representation of how transportation links perform with varying demand, playing a crucial role in forecasting. User equilibrium and system optimal are route choice formulations that differ in individual vs. network-wide optimization. The transportation planning process involves goal setting, data analysis, problem identification, alternatives evaluation, plan development, implementation, and monitoring/evaluation.

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solve for x 2(x+3)+4=5x+6​

Answers

Answer:

x = 4/3

Step-by-step explanation:

2(x+3) + 4 = 5x + 6​

2x + 6 + 4 = 5x + 6

2x + 10 = 5x + 6

-3x + 10 = 6

-3x = -4

x = 4/3

Let's solve the equation step by step:

2(x + 3) + 4 = 5x + 6

First, distribute the 2 to the terms inside the parentheses:

2x + 6 + 4 = 5x + 6

Combine like terms:

2x + 10 = 5x + 6

Next, let's isolate the variable x on one side of the equation. We can do this by subtracting 2x from both sides:

2x - 2x + 10 = 5x - 2x + 6

Simplifying further:

10 = 3x + 6

Now, subtract 6 from both sides:

10 - 6 = 3x + 6 - 6

4 = 3x

Finally, divide both sides by 3 to solve for x:

4/3 = x

Therefore, the solution to the equation is x = 4/3.

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A right rectangular prism has length 4 cm, width 2 cm, and height 7 cm. If the length, width, and height are halved, what happens to the surface area?
A: The surface area is doubled.
B: The surface area is multiplied by 1/4.
C: The surface area is multiplied by 4.

Answers

Answer:

Answer is The surface area is double

Please mark me as brainliest!!!

Therefore, the surface area of the rectangular prism is multiplied by 1/4.

Explanation: When the length, width, and height of a right rectangular prism are halved, the new dimensions are 2cm by 1cm by 3.5cm. The surface area of the original rectangular prism is

2lw + 2lh + 2wh = 2(4 x 2 + 4 x 7 + 2 x 7) = 2(8 + 28 + 14) = 2(50) = 100cm².

The surface area of the new rectangular prism is

2(2 x 1 + 2 x 3.5 + 1 x 3.5) = 2(2 + 7 + 3.5) = 2(12.5) = 25cm².

Therefore, the surface area of the rectangular prism is multiplied by 1/4. Thus, the correct option is (B) The surface area is multiplied by 1/4. The surface area is multiplied by 1/4.

Therefore, the surface area of the rectangular prism is multiplied by 1/4. the correct option is (B).

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Calculate the following for the given frequency
distribution:
Data
Frequency
40 −- 46
11
47 −- 53
21
54 −- 60
10
61 −- 67
11
68 −- 74
8
75 −- 81
7
Sample Mean =
Sampl

Answers

Frequency Distribution of data is an arrangement of data into groups called classes along with their corresponding frequencies or counts.

The sample mean is the arithmetic average of a sample and is one of the most commonly used measures of central tendency.

Then the arithmetic mean of the given distribution can be found out as follows:

Given frequency distribution: Class Interval (X)  Frequency (f) 40-46  11 47-53  21 54-60  10 61-67  11 68-74  8 75-81  7Sample mean = [tex]\frac{\sum fx}{\sum f}[/tex]

we need to calculate mid-points of the given intervals;

Mid-point of 40-46 = (40+46)/2 = 43Mid-point of 47-53 = (47+53)/2 = 50Mid-point of 54-60 = (54+60)/2 = 57Mid-point of 61-67 = (61+67)/2 = 64Mid-point of 68-74 = (68+74)/2 = 71Mid-point of 75-81 = (75+81)/2 = 78

Now, we need to calculate the product of mid-point and frequency and sum it up.

Let us tabulate the values:Frequencies(X)  Frequency (f)  FX  43  11  473  50  21  1050  57  10  570  64  11  704  71  8  568  78  7  546Total  68  3911

Now, Sample Mean = [tex]\frac{\sum fx}{\sum f}[/tex]= [tex]\frac{3911}{68}[/tex]= 57.515Hence, the Sample mean of the given frequency distribution is 57.515.

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This problem demonstrates a possible (though rare) situation that can occur with group comparisons. The groups are sections and the dependent variable is an exam score. Section 1 Section 2 Section 3 63.5 79 60.7 79.8 58.3 65.9 74.1 39.3 73.9 62.4 52.5 67.2 76.1 36.7 69.8 70.4 75.4 70.4 71.3 59.7 76.4 65.5 63.5 69 55.7 53.4 59 Run a one-way ANOVA (fixed effect) with a = 0.05. Round the F-ratio to three decimal places and the p- value to four decimal places. Assume all population and ANOVA requirements are met. F = P = What is the conclusion from the ANOVA? O reject the null hypothesis: at least one of the group means is different O fail to reject the null hypothesis: not enough evidence to suggest the group means are different Add Work

Answers

The problem in this case demonstrates a rare but possible situation that can occur with group comparisons. The groups in this case are the sections while the dependent variable is an exam score.

The objective is to run a one-way ANOVA (fixed effect) with a = 0.05. After performing the calculation, the F-ratio should be rounded to three decimal places and the p-value to four decimal places. This will assume that all population and ANOVA requirements have been met. We are to find out the conclusion from the ANOVA.

Let us now calculate the sum of squares for the treatment:

SS (treatment) = SST = ∑∑Xij² - ( ∑∑Xij)² / n = 39248.8476 - (455.6)² / 27= 1101.5645

Sum of squares for error: SS (error) = SSE = ∑∑Xij² - ∑Xi² / n = 119177.0971 - 455.6² / 27= 978.5265

Finally, we can now calculate the total sum of squares:

SS (total) = SSTO = ∑∑Xij² - ( ∑∑Xij)² / N= 157425.9441 - (455.6)² / 27= 2076.0915

Degrees of freedom are calculated as follows:

df (treatment) = k - 1 = 3 - 1 = 2df (error) = N - k = 27 - 3 = 24df (total) = N - 1 = 27 - 1 = 26

We can now calculate the Mean Square values:

MS (treatment) = MST = SST / df (treatment) = 1101.5645 / 2= 550.7823MS (error) = MSE = SSE / df (error) = 978.5265 / 24= 40.7728

Now let's calculate the F value: F-ratio = MST / MSE = 550.7823 / 40.7728= 13.4999 (to three decimal places).

The p-value can be calculated using an F-distribution table with degrees of freedom df (treatment) = 2 and df (error) = 24. The p-value for this F-ratio is less than 0.0005 (to four decimal places).The conclusion from the ANOVA can now be made. Since the p-value (less than 0.0005) is less than the alpha level (0.05), we reject the null hypothesis. Thus, at least one of the group means is different. Therefore, the correct option is O reject the null hypothesis: at least one of the group means is different.

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3.2.18. thank you
he f. By how many times must the sample size increase in the margin of error in half? his n The sample size was really 2,228. Calculate the 95% confidence in- terval for the population proportion of a

Answers

We are 95% confident that the true population proportion is between 0.479 and 0.521.

How to explain the population

The margin of error (ME) is inversely proportional to the square root of the sample size (n). So, to cut the margin of error in half, we need to quadruple the sample size.

In the case of the question, the initial sample size was 2,228. To cut the margin of error in half, we would need to quadruple the sample size to 8,832.

The 95% confidence interval for the population proportion is calculated using the following formula:

CI = p ± ME

In the case of the question, the sample proportion is 0.5. The margin of error is 0.5/✓2,228) = 0.021. So, the 95% confidence interval is:

CI = 0.5 ± 0.021

[0.479, 0.521]

This means that we are 95% confident that the true population proportion is between 0.479 and 0.521.

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A passenger on a boat notices that there is a dolphin 3.4 yards below the boat. There is also a fish 1.2 yards below the boat. They also see a bird that is 1.2 yards above the boat. Part A: Explain how you would create a number line for these points. (1 point) Part B: What does zero represent on your number line? (1 point) Part C: Determine which two points are opposites, using absolute value. Be sure to show your work.

Answers

Part A: To create a number line for these points, we can choose a reference point on the number line, which we can consider as the boat itself. We can then represent distances below the boat as negative numbers and distances above the boat as positive numbers.

Let's choose the reference point on the number line as the boat. We can represent distances below the boat as negative numbers and distances above the boat as positive numbers. Based on the given information, we have:

-3.4 yards (dolphin) - below the boat

-1.2 yards (fish) - below the boat

+1.2 yards (bird) - above the boat

So, our number line representation would look like this:

-3.4 -1.2 0 +1.2

|--------|--------|--------|

Part B: On the number line, zero represents the reference point, which is the boat. It is the point of reference from which we measure the distances below and above the boat.

Part C: To determine which two points are opposites, we can look for the pair of points that have the same absolute value but differ in sign.

In this case, the two points that are opposites are the dolphin (-3.4 yards below the boat) and the bird (+1.2 yards above the boat). Both of these points have an absolute value of 3.4 but differ in sign.

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A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 25 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more adult Americans does the researcher need to sample if 22% of all adult American support the changes? HINT: Remember to always round up to the next integer when determining sample size. Question 30 2 pts A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 25 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more adult Americans does the researcher need to sample if 78% of all adult American support the changes? HINT: Remember to always round up to the next integer when determining sample size.

Answers

The researcher needs to sample 55 more adult Americans to say that the distribution of the sample proportion of adults who respond "yes" is approximately normal, assuming that 22% of all adult Americans support the changes.

To determine the required sample size, we can use the formula for sample size calculation in a proportion estimation problem:

n = (Z^2 * p * q) / E^2

where:

- n is the required sample size,

- Z is the Z-score corresponding to the desired level of confidence (assuming a 95% confidence level, Z ≈ 1.96),

- p is the estimated proportion (22% = 0.22 in this case),

- q is the complement of the estimated proportion (q = 1 - p = 1 - 0.22 = 0.78), and

- E is the desired margin of error (we want the distribution to be approximately normal, so a small margin of error is desirable).

Plugging in the given values, we can calculate the required sample size:

n = (1.96^2 * 0.22 * 0.78) / (0.02^2)

n ≈ 55

Therefore, the researcher needs to sample 55 more adult Americans.

To ensure that the distribution of the sample proportion of adults who respond "yes" is approximately normal when 22% of all adult Americans support the proposed changes, the researcher should sample an additional 55 adult Americans. This larger sample size will provide a more accurate representation of the population and increase the confidence in the estimated proportion.

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A swim team has 75 members and there is a 12% absentee rate per
team meeting.
Find the probability that at a given meeting, exactly 10 members
are absent.

Answers

To find the probability that exactly 10 members are absent at a given meeting, we can use the binomial probability formula. In this case, we have a fixed number of trials (the number of team members, which is 75) and a fixed probability of success (the absentee rate, which is 12%).

The binomial probability formula is given by:

[tex]\[ P(X = k) = \binom{n}{k} \cdot p^k \cdot (1-p)^{n-k} \][/tex]

where:

- [tex]\( P(X = k) \)[/tex] is the probability of exactly k successes

- [tex]\( n \)[/tex] is the number of trials

- [tex]\( k \)[/tex] is the number of successes

- [tex]\( p \)[/tex] is the probability of success

In this case, [tex]\( n = 75 \), \( k = 10 \), and \( p = 0.12 \).[/tex]

Using the formula, we can calculate the probability:

[tex]\[ P(X = 10) = \binom{75}{10} \cdot 0.12^{10} \cdot (1-0.12)^{75-10} \][/tex]

The binomial coefficient [tex]\( \binom{75}{10} \)[/tex] can be calculated as:

[tex]\[ \binom{75}{10} = \frac{75!}{10! \cdot (75-10)!} \][/tex]

Calculating these values may require a calculator or software with factorial and combination functions.

After substituting the values and evaluating the expression, you will find the probability that exactly 10 members are absent at a given meeting.

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the ________________ test is akin to the independent samples t-test. group of answer choices

Answers

The answer we require is: The Mann-Whitney U test is akin to the independent samples t-test.

What is the independent t-test?

An Independent t-test (also known as an unpaired t-test or a two-sample t-test) is a statistical procedure that examines whether two populations have the same mean. This is done by comparing the means of two groups, which are typically independent samples. The independent samples t-test is used to compare the means of two groups when the samples are independent, have similar variances, and come from normal distributions. It is used to investigate the relationship between two continuous variables that are independent.

What is the Mann-Whitney U test?

The Mann-Whitney U test is a non-parametric test used to determine whether two independent samples are significantly different from each other. It is used to compare two independent groups when the dependent variable is continuous and the data are not normally distributed or when the data are ordinal.

The Mann-Whitney U test is also referred to as the Wilcoxon rank-sum test and is useful when the data is not normally distributed or when the sample sizes are small. The Mann-Whitney U test is akin to the independent samples t-test.

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Data set 2: 23, 47, 16, 26, 20, 37, 31, 17, 29, 19, 38, 39, 41 Provide the summary statistics for data set 2. Q14. What is the mean value? Q15. What is the median value? Q16. What is the sum of square

Answers

Q14. Mean Value of given data set is 27.8.

The mean value (average) can be found by summing up all the values in the data set and dividing by the total number of values.

Mean = (23 + 47 + 16 + 26 + 20 + 37 + 31 + 17 + 29 + 19 + 38 + 39 + 41) / 13

Mean = 362 / 13 ≈ 27.8

Therefore, the mean value of data set 2 is approximately 27.8.

Q15. Median Value of given data set is 29.

To find the median value, we need to arrange the data set in ascending order and find the middle value. If there is an even number of values, we take the average of the two middle values.

Arranging the data set in ascending order: 16, 17, 19, 20, 23, 26, 29, 31, 37, 38, 39, 41, 47

As there are 13 values, the middle value will be the 7th value, which is 29.

Therefore, the median value of data set 2 is 29.

Q16. Sum of Squares of given data set is 41468.

The sum of squares can be found by squaring each value in the data set, summing up the squared values, and calculating the total.

Sum of Squares = ([tex]23^2 + 47^2 + 16^2 + 26^2 + 20^2 + 37^2 + 31^2 + 17^2 + 29^2 + 19^2 + 38^2 + 39^2 + 41^2)[/tex]

Sum of Squares = 20767 + 2209 + 256 + 676 + 400 + 1369 + 961 + 289 + 841 + 361 + 1444 + 1521 + 1681

Sum of Squares = 41468

Therefore, the sum of squares for data set 2 is 41468.

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find the lengths of the sides of the triangle pqr. p(5, 1, 4), q(3, 3, 3), r(3, −3, 0)

Answers

The lengths of the sides of triangle PQR are: PQ = 3, QR = 3√5, RP = 6.

In order to find the lengths of the sides of the triangle pqr with p(5, 1, 4), q(3, 3, 3), r(3, −3, 0), we can use the distance formula.

The distance formula for finding the distance between two points (x1, y1, z1) and (x2, y2, z2) in a 3-dimensional space is given by:

[tex]$$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$$[/tex]

The length of the side PQ is:

[tex]$$\begin{aligned} PQ&=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2} \\ &=\sqrt{(3-5)^2+(3-1)^2+(3-4)^2} \\ &=\sqrt{4+4+1} \\ &=\sqrt{9} \\ &=3 \end{aligned}$$[/tex]

The length of the side QR is:

[tex]$$\begin{aligned} QR&=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2} \\ &=\sqrt{(3-3)^2+(3-(-3))^2+(3-0)^2} \\ &=\sqrt{36+9} \\ &=\sqrt{45} \\ &=3\sqrt{5} \end{aligned}$$[/tex]

The length of the side RP is:

[tex]$$\begin{aligned} RP&=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2} \\ &=\sqrt{(3-5)^2+(-3-1)^2+(0-4)^2} \\ &=\sqrt{4+16+16} \\ &=\sqrt{36} \\ &=6 \end{aligned}$$[/tex]

Therefore, the lengths of the sides of triangle PQR are: PQ = 3, QR = 3√5, RP = 6.

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L Question 5 of 12 View Policies Current Attempt in Progress Solve the following triangle (if possible). b = 73, c = 81, a = 160° Round your answers to one decimal place. B≈ i i az jad. ANE Kat

Answers

The value of the angle B is approximately 117.9°.

Given, the sides of a triangle b=73, c=81 and the angle a=160°

We have to find the angle B using the law of cosines.

Law of cosines:

cos A=(b²+c²-a²)/2bc

cos B=(a²+c²-b²)/2ac

cos C=(a²+b²-c²)/2ab

Where A, B, C are angles and a, b, c are sides of a triangle.

To find angle B, we use the formula,

cos B=(a²+c²-b²)/2ac

cos B = (73²+81²-160²)/(2×73×81)

cos B = -0.4110.

Using a calculator, we get

cos B = -0.4110

cos B is negative, which means that the angle is obtuse.

We have to take the inverse cosine function to find the angle B.

B ≈ 117.9°(rounded to one decimal place)

Hence, the value of the angle B is approximately 117.9°.

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I need these highschool statistics questions to be solved. It
would be great if you write the steps on paper, too.
7. A consumer group hoping to assess customer experiences with auto dealers surveys 167 people who recently bought new cars; 3% of them expressed dissatisfaction with the salesperson. Which condition

Answers

The condition mentioned in the question is that 3% of the 167 people surveyed expressed dissatisfaction with the salesperson.

To assess customer experiences with auto dealers, a consumer group surveyed 167 people who recently bought new cars. Out of the 167 respondents, 3% expressed dissatisfaction with the salesperson. This condition tells us the proportion of dissatisfied customers in the sample.

To calculate the actual number of dissatisfied customers, we can multiply the sample size (167) by the proportion (3% or 0.03):

Number of dissatisfied customers = 167 * 0.03 = 5.01 (rounded to 5)

Therefore, based on the survey results, there were approximately 5 people who expressed dissatisfaction with the salesperson out of the 167 surveyed.

According to the survey of 167 people who recently bought new cars, approximately 3% (or 5 people) expressed dissatisfaction with the salesperson. This information provides insight into the customer experiences with auto dealers and highlights the need for further analysis and improvement in salesperson-customer interactions.

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Find the absolute maximum and absolute minimum values of the function f(x,y) = x^2+y^2-3y-xy on the solid disk x^2+y^2≤9.

Answers

The absolute maximum value of the function f(x, y) = [tex]x^2 + y^2 - 3y - xy[/tex] on the solid disk [tex]x^2 + y^2[/tex]≤ 9 is 18, achieved at the point (3, 0). The absolute minimum value is -9, achieved at the point (-3, 0).

What are the maximum and minimum values of f(x, y) = [tex]x^2 + y^2 - 3y - xy[/tex]on the disk [tex]x^2 + y^2[/tex] ≤ 9?

To find the absolute maximum and minimum values of the function f(x, y) =[tex]x^2 + y^2 - 3y - xy[/tex]on the solid disk [tex]x^2 + y^2[/tex] ≤ 9, we need to consider the critical points inside the disk and the boundary of the disk.

First, let's find the critical points by taking the partial derivatives of f(x, y) with respect to x and y and setting them equal to zero:

[tex]\frac{\delta f}{\delta x}[/tex] = 2x - y = 0 ...(1)

[tex]\frac{\delta f}{\delta y}[/tex] = 2y - 3 - x = 0 ...(2)

Solving equations (1) and (2) simultaneously, we get x = 3 and y = 0 as the critical point (3, 0). Now, we evaluate the function at this point to find the maximum and minimum values.

f(3, 0) = [tex](3)^2 + (0)^2[/tex] - 3(0) - (3)(0) = 9

So, the point (3, 0) gives us the absolute maximum value of 9.

Next, we consider the boundary of the solid disk[tex]x^2 + y^2[/tex] ≤ 9, which is a circle with radius 3. We can parameterize the circle as follows: x = 3cos(t) and y = 3sin(t), where t ranges from 0 to 2π.

Substituting these values into the function f(x, y), we get:

=f(3cos(t), 3sin(t)) = [tex](3cos(t))^2 + (3sin(t))^2[/tex] - 3(3sin(t)) - (3cos(t))(3sin(t))

= [tex]9cos^2(t) + 9sin^2(t)[/tex] - 9sin(t) - 9cos(t)sin(t)

= 9 - 9sin(t)

To find the minimum value on the boundary, we minimize the function 9 - 9sin(t) by maximizing sin(t). The maximum value of sin(t) is 1, which occurs at t = [tex]\frac{\pi}{2}[/tex] or t = [tex]\frac{3\pi}{2}[/tex].

Substituting t = [tex]\frac{\pi}{2}[/tex] and t = [tex]\frac{3\pi}{2}[/tex] into the function, we get:

f(3cos([tex]\frac{\pi}{2}[/tex]), 3sin([tex]\frac{\pi}{2}[/tex])) = 9 - 9(1) = 0

f(3cos([tex]\frac{3\pi}{2}[/tex]), 3sin([tex]\frac{3\pi}{2}[/tex])) = 9 - 9(-1) = 18

Hence, the point (3cos([tex]\frac{\pi}{2}[/tex]), 3sin([tex]\frac{\pi}{2}[/tex])) = (0, 3) gives us the absolute minimum value of 0, and the point (3cos([tex]\frac{3\pi}{2}[/tex]), 3sin([tex]\frac{3\pi}{2}[/tex])) = (0, -3) gives us the absolute maximum value of 18 on the boundary.

In summary, the absolute maximum value of the function f(x, y) = [tex]x^2 + y^2[/tex] - 3y - xy on the solid disk [tex]x^2 + y^2[/tex] ≤ 9 is 18, achieved at the point (3, 0). The absolute minimum value is 0, achieved at the point (0, 3).

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Which of the following are true about the function f if its derivative is defined by ? I. f is decreaing for all x<4 II. f has a local maximum at x = 1 III. f is concave up for all 1 < x < 3 [a]I only [b]II only [c]III only [d]II and III only [e]I, II, and III

Answers

The correct statements regarding the given derivative of function f are explained. The correct option is (e) I, II, and III.

The derivative of function f is defined by `f'(x) = 2(x - 1)(x - 3)`

The derivative of f is given by:f'(x) = 2(x - 1)(x - 3)

The derivative of f is a quadratic function with zeros at x = 1 and x = 3.

Therefore, the derivative of f is positive on the intervals (-∞, 1) and (3, ∞) and negative on the interval (1, 3).

We can use this information to determine properties of the function f.

I. f is decreasing for all x < 4: Since the derivative is positive on the interval (-∞, 1) and negative on the interval (1, 3), it follows that f is decreasing on (-∞, 1) and (1, 3).

Therefore, I is true.II. f has a local maximum at x = 1:

Since the derivative changes sign from positive to negative at x = 1, we know that f has a local maximum at x = 1.

Therefore, II is true.III. f is concave up for all 1 < x < 3:Since the derivative of f is positive on (1, 3), it follows that the function f is concave up on (1, 3).

Therefore, III is true.The statements I, II, and III are all true about the function f if its derivative is defined by f'(x) = 2(x - 1)(x - 3). Therefore, the correct option is (e) I, II, and III.

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A quality department of a manufacturing firm draws a sample of
250 from the population. The population is believed to be have 30%
of the products defective. What is the probability that the sample
pro

Answers

The probability that the sample proportion of defective products will be less than or equal to 20% is very low (0.04%). This suggests that the quality department should investigate the manufacturing process to identify and address any issues that may be causing a higher-than-expected rate of defects.

Based on the given information, we can assume that this is a binomial distribution problem, where:

n = 250 (sample size)

p = 0.3 (population proportion of defective products)

The probability of finding x defective products in a sample of size n can be calculated using the formula for binomial distribution:

P(X = x) = (nCx) * p^x * (1-p)^(n-x)

Where:

nCx represents the number of ways to choose x items from a set of n items

p^x represents the probability of getting x successes

(1-p)^(n-x) represents the probability of getting n-x failures

To calculate the probability that the sample will have less than or equal to k defective products, we need to add up the probabilities of all possible values from 0 to k:

P(X <= k) = Σ P(X = x), for x = 0 to k

In this case, we want to find the probability that the sample proportion of defective products will be less than or equal to 20%, which means k = 0.2 * 250 = 50.

Therefore, we have:

P(X <= 50) = Σ P(X = x), for x = 0 to 50

P(X <= 50) = Σ (250Cx) * 0.3^x * 0.7^(250-x), for x = 0 to 50

This calculation involves summing up 51 terms, which can be tedious to do by hand. However, we can use software like Excel or a statistical calculator to find the answer.

Using Excel's BINOM.DIST function with the parameters n=250, p=0.3, and cumulative=True, we get:

P(X <= 50) = BINOM.DIST(50, 250, 0.3, True) = 0.0004

Therefore, the probability that the sample proportion of defective products will be less than or equal to 20% is very low (0.04%). This suggests that the quality department should investigate the manufacturing process to identify and address any issues that may be causing a higher-than-expected rate of defects.

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find the cosine of the angle between the vectors 6 and 10 7.

Answers

The cosine of the angle between the vectors 6 and 10 7 is `42 / (6 √(149))`.

To find the cosine of the angle between the vectors 6 and 10 7, we need to use the dot product formula.

The dot product formula is given as follows:  `a . b = |a| |b| cos θ`Where `a` and `b` are two vectors, `|a|` and `|b|` are their magnitudes, and `θ` is the angle between them.

Using this formula, we get: `6 . 10 7 = |6| |10 7| cos θ`

Simplifying: `42 = √(6²) √((10 7)²) cos θ`

Now, `|6| = √(6²) = 6` and `|10 7| = √((10 7)²) = √(149)`

Therefore, we get: `42 = 6 √(149) cos θ`

Simplifying, we get: `cos θ = 42 / (6 √(149))`

Therefore, the cosine of the angle between the vectors 6 and 10 7 is `42 / (6 √(149))`.

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Standard Normal Distribution
7. Marks for Statistic test have the mean 68 and standard deviation 12. Find the probability that one student is selected at random will get a) More than 75 b) Less than 60 c) Between 65 ad 70 d) Less

Answers

The probabilities are, a) More than 75 = 0.2798 b) Less than 60 = 0.2525 c) Between 65 and 70 = 0.1662 d) Less than 50 = 0.0668

Given, Mean (μ) = 68 Standard deviation (σ) = 12

We need to find the probability that one student is selected at random will get,

a) More than 75z = (75 - 68) / 12= 0.5833P(z > 0.5833) = 1 - P(z ≤ 0.5833)From the standard normal distribution table, we have the value of P(z ≤ 0.58) as 0.7202

Therefore, P(z > 0.5833) = 1 - 0.7202 = 0.2798

b) Less than 60z = (60 - 68) / 12= -0.6667P(z < -0.6667)

From the standard normal distribution table, we have the value of P(z < -0.6667) as 0.2525

Therefore, P(z < -0.6667) = 0.2525

c) Between 65 and 70

z1 = (65 - 68) / 12= -0.25z2 = (70 - 68) / 12= 0.1667P(-0.25 < z < 0.1667) = P(z < 0.1667) - P(z < -0.25)

From the standard normal distribution table, we have the value of P(z < -0.25) as 0.4013 and P(z < 0.1667) as 0.5675

Therefore, P(-0.25 < z < 0.1667) = 0.5675 - 0.4013 = 0.1662

d) Less than 50z = (50 - 68) / 12= -1.5P(z < -1.5) From the standard normal distribution table, we have the value of P(z < -1.5) as 0.0668

Therefore, P(z < -1.5) = 0.0668

Hence, the probabilities are, a) More than 75 = 0.2798 b) Less than 60 = 0.2525 c) Between 65 and 70 = 0.1662 d) Less than 50 = 0.0668

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A marketing survey involves product recognition in New York and California. Of 198 New Yorkers surveyed, 51 knew the product while 74 out of 301 Californians knew the product. At the 2.5% significance level, use the critical value method to test the claim that the recognition rates are different in the states. Enter the smallest critical value. (Round your answer to nearest hundredth.)

Answers

The smallest critical value is -1.96 at the 2.5% significance level.

To test the claim that the recognition rates are different in New York and California, we can use a two-sample z-test for proportions.

The null hypothesis is that the proportion of people who recognize the product in New York is equal to the proportion in California, while the alternative hypothesis is that they are different.

Let p1 be the proportion of people who recognize the product in New York, p2 be the proportion in California, and p be the pooled proportion. Then:

p1 = 51/198 = 0.2576

p2 = 74/301 = 0.2458

p = (51+74)/(198+301) = 0.2514

The test statistic is given by:

z = (p1 - p2) / sqrt(p*(1-p)*(1/198 + 1/301))

z = (0.2576 - 0.2458) / sqrt(0.2514*(1-0.2514)*(1/198 + 1/301))

z = 1.1143

Using a significance level of 2.5%, the critical value for a two-tailed test is ±1.96.

Since our test statistic falls within this range, we fail to reject the null hypothesis and conclude that there is not enough evidence to suggest that the recognition rates are different in New York and California.

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an If 10% of the cars approaching intersection leg turn left, what is the probability that at least one out of three cars chosen at random will turn left?

Answers

The probability that at least one out of three cars chosen at random will turn left is 0.271. Therefore, option A is the correct answer.

The given probabilities are:

P(TL) = 0.10P(STL)

= 0.90

Suppose we randomly select three cars out of all the cars approaching the intersection leg.

The probability that all three do not turn left is:

P(not TL) = P(STL) * P(STL) * P(STL)P(not TL)

= 0.90 * 0.90 * 0.90P(not TL) = 0.729

The probability that at least one car turns left is:

P(at least one TL) = 1 - P(not TL)P(at least one TL) = 1 - 0.729P(at least one TL)

= 0.271

The probability that at least one out of three cars chosen at random will turn left is 0.271. Therefore, option A is the correct answer.

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Question Determine the area under the standard normal curve that lies to the right of the x-score of 1.15. Z 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.9 0.8159 0.8186 0.8212 0.8238 0.8289 0.

Answers

The area under the standard normal curve that lies to the right of the z-score of 1.15 is approximately 0.1251.

To determine the area under the standard normal curve that lies to the right of the z-score of 1.15, we can use a standard normal distribution table or a calculator.

From the given z-scores in the table, we can see that the closest value to 1.15 is 1.15 itself. The corresponding area to the right of 1.15 is not directly provided in the table.

To find the area to the right of 1.15, we can use the symmetry property of the standard normal distribution. The area to the right of 1.15 is equal to the area to the left of -1.15.

Using the z-score table, we can find the area to the left of -1.15, which is approximately 0.1251.

Therefore, the area under the standard normal curve that lies to the right of the z-score of 1.15 is approximately 0.1251.

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