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Consider the following hypothesis test: Ho: µ 2 20 Ha: µ< 20 A sample of 60 provided a sample mean of 19.6. The population standard deviation is 1.6. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. b. What is the p-value (to 4 decimals)? c. Using a = 0. 05, can it be concluded that the population mean is less than 20? - Select your answer - v d. What is the rejection rule using the critical value? Use a = 0.05. Round your answer to three decimal places. Enter negative value as negative number. Reject Ho if z is - Select your answer - Using the critical value approach, can it be concluded that the population mean is less than 20? - Select your answer - v

Consider the following hypothesis test: Ho: µ 2 20 Ha: µ< 20 A sample of 60 provided a sample mean of 19.6. The population standard deviation is 1.6. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. b. What is the p-value (to 4 decimals)? c. Using a = 0. 05, can it be concluded that the population mean is less than 20? - Select your answer - v d. What is the rejection rule using the critical value? Use a = 0.05. Round your answer to three decimal places. Enter negative value as negative number. Reject Ho if z is - Select your answer - Using the critical value approach, can it be concluded that the population mean is less than 20? - Select your answer - v

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Consider the following hypothesis test: Но: и > 20 Ha: µ < 20 A sample of 60 provided a sample mean of 19.6. The population standard deviation is 1.6. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. b. What is the p-value (to 4 decimals)? c. Using a = 0. 05, can it be concluded that the population mean is less than 20? - Select your answer - d. What is the rejection rule using the critical value? Use a = 0.05. Round your answer to three decimal places. Enter negative value as negative number. Reject Ho if z is - Select your answer - Using the critical value approach, can it be concluded that the population mean is less than 20? - Select your answer - ♥
Transcribed Image Text:Consider the following hypothesis test: Но: и > 20 Ha: µ < 20 A sample of 60 provided a sample mean of 19.6. The population standard deviation is 1.6. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. b. What is the p-value (to 4 decimals)? c. Using a = 0. 05, can it be concluded that the population mean is less than 20? - Select your answer - d. What is the rejection rule using the critical value? Use a = 0.05. Round your answer to three decimal places. Enter negative value as negative number. Reject Ho if z is - Select your answer - Using the critical value approach, can it be concluded that the population mean is less than 20? - Select your answer - ♥
A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive officer (CEO) was at least eleven years. A survey of companies reported in The Wall Street Journal found a sample mean tenure of x = 9.71 years for CEOS with a standard deviation of s = 6.66 years. a. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. Но : и - Select your answer - 11 На : р - Select your answer - 11 b. Assume 60 companies were included in the sample. What is the p-value for your hypothesis test? Enter negative value as negative number. t-value (to 3 decimals) p-value - Select your answer - С. At a - 0.01, what is your conclusion? - Select your answer - v the null hypothesis. We - Select your answer - v enough evidence to disprove the shareholder group's claim.
Transcribed Image Text:A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive officer (CEO) was at least eleven years. A survey of companies reported in The Wall Street Journal found a sample mean tenure of x = 9.71 years for CEOS with a standard deviation of s = 6.66 years. a. Formulate hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. Но : и - Select your answer - 11 На : р - Select your answer - 11 b. Assume 60 companies were included in the sample. What is the p-value for your hypothesis test? Enter negative value as negative number. t-value (to 3 decimals) p-value - Select your answer - С. At a - 0.01, what is your conclusion? - Select your answer - v the null hypothesis. We - Select your answer - v enough evidence to disprove the shareholder group's claim.
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