Scores on the ACT college entrance exam follow a normal distribution with mean 21 and standard deviation 5. Wayne's z-score on the ACT was -0.6. What was Wayne's actual ACT score? 18 3 O 16 13 24

Q: 4-14. Let X₁, X₂, . . . , X₂ be a random sample of size n. (a) Show that X² is a biased estimator…

A: Let X1,X2,.....Xn be a random sample of size n.

Q: Let x be a hypergeometric random variable with N = 16, n = 3, and M = 4. (Suppose you are given p(0)…

A: p(0) = 0.39, p(1) = 0.47, p(2) = 0.13, p(3) = 0.01

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A: From the provided information,

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A: Neurologist BNeurologist A123413850123311363101450437310

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A: It is needed to find the confidence interval.

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Q: 6. Let f(x) = (x + 1)/2, −1 < x < 1. a) Find the 61st percentile of X, i.e. x0.39. b) Find the…

A: f(x)=x+12 ; -1&lt; X&lt; 1

Q: Determine the test statistic for this hypothesis test. (Round to two decimal places as needed.)

A: From the given information we make the following tableInitial Depth, XiDepth Five years…

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A: 90% of adults watch TV every day.i.e. sample size (n) =50Want to calculate the probability that at…

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A:

Q: Find P/B or S).

A: A student plans to play basketball.Let event B= the student plays basketball.Event S = Its sunny…

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A: For the distribution of the required time (in minutes) for oil change, it is given that the mean and…

Q: Ms. Maria Wilson is considering running for mayor of the town of Bear Gulch, Montana. Before…

A: sample size(n)=400x=300confidence level=99%

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A: Given the data as

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A: The data is given on the no. of students graduating from college with degrees in several…

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A: n=935, X=548

Q: Studies Water clanty at the same location in a lake on the same dates during the course of a year…

A: There are two dependent samples which are Initial Depth and Depth Five Years Later.We have to test…

Q: Approximately what is P(Z ≤ 0.5)? * O 0.0 O 0.3085 O 0.3446 O 0.6554 O 0.6915

A: P(z0.5)

Q: A particular concentration of a chemical found in polluted water has been found to be lethal to 20%…

A:

Q: A least squares regression line was calculated to relate the length (cm) of newborn boys to their…

A: It is needed to find the residual.

Q: In southern California, a growing number of persons pursuing a teaching credential are choosing paid…

A:

Q: A researcher studies water clarity at the same location in a lake on the same dates during the…

A: This is an example of paired t-test.The hypothesis will be:H0: H1: Test statistic is t =…

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A: Given,Number of white marbles, n(W) = 3Number of green marbles, n(G) = 2Number of red marbles, n(R)…

Q: Find the probability. (Round your answer to four decimal places.) 5 0 5 .9 5

A: As we know that formula of combination is:

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A: May manages a $10 Bn hedge fund.Loss upto $1 Bn will result in 0 bonus. Losses exceeding $1 Bn will…

Q: Below is the joint probability distribution of a and b. 0 1 0.1.2 C C

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A: Telephone calls follow a Poisson process.Number of calls for every 3 minutes, on average, is 2.

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A: When using the exponentially weighted moving average for purposes of smoothing rather than…

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Q: The multiple regression model is significant to what level?

A: It is required to determine the level to which the multiple regression model is significant.

Q: If a hypothesis is rejected at a 5% level of significance, it a.) will never be tested at the 1%…

A: From the provided information,A hypothesis is rejected at 5% level of significance.

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A: H The people in all age groups are equally likely to be promoted.H The people in all age groups are…

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A:

Q: Can you please explain the steps in 2 and 3. As I don't understand how you got the 97.72 percent.

A:

Q: Let X be a binomial random variable with n = 20 and p = 0.1. a) Calculate P(X ≤ 2) using a…

A: Note:- "Since you have posted a question with multiple subparts we will provide solutions only to…

Q: Cans of regular Coke are labeled as containing 12 oz. Statistics students weighed the contents of 6…

A: The mean is 12 and the standard deviation is 0.09.

Q: 1. (Based on Book problem 2.5.8) The random variable X measures the concentration of ethanol in a…

A: Given a random variables X and Y with their joint probability density…

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A: Since we know that type II is defined as-The failure of rejection of the null hypothesis, when it is…

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A: The objective is to identify how omitting a relevant variable from a regression model affect the…

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A: It is required to determine whether 9 is a significantly high value, if 9 of the 12 selected voters…

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A: The provided information is as follows:The scatter plot represents the hours between the hours of…