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A sporting goods store believes the average age of its customers is 37 or less. A random sample of 45 customers was surveyed, and the average customer age wa found to be 40.3 years. Assume the standard deviation for customer age is 9.0 years. Using a =0.10, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Ho: H:H The z-test statistic is (Round to two decimal places as needed.)

A sporting goods store believes the average age of its customers is 37 or less. A random sample of 45 customers was surveyed, and the average customer age wa found to be 40.3 years. Assume the standard deviation for customer age is 9.0 years. Using a =0.10, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Ho: H:H The z-test statistic is (Round to two decimal places as needed.)

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
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A sporting goods store believes the average age of its customers is 37 or less. A random sample of 45 customers was surveyed, and the average customer age was found to be 40.3 years. Assume the standard deviation for customer age is 9.0 years. Using a = 0.10, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Ho: H The z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed. Use a comma to separate answers as needed.) Because the test statistic the null hypothesis. b. Determine the p-value for this test. The p-value is (Round to three decimal places as needed.) Enter your answer in each of the answer boxes. ?) This course (Intro to Rus Statistics - Fall 2020) is based on Donnelly: Business Statistics, 3e
Transcribed Image Text:A sporting goods store believes the average age of its customers is 37 or less. A random sample of 45 customers was surveyed, and the average customer age was found to be 40.3 years. Assume the standard deviation for customer age is 9.0 years. Using a = 0.10, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Ho: H The z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed. Use a comma to separate answers as needed.) Because the test statistic the null hypothesis. b. Determine the p-value for this test. The p-value is (Round to three decimal places as needed.) Enter your answer in each of the answer boxes. ?) This course (Intro to Rus Statistics - Fall 2020) is based on Donnelly: Business Statistics, 3e
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