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A sporting goods store believes the average age of its customers is 37 or less. A random sample of 42 customers was surveyed, and the average customer age was found to be 39.3 years. Assume the standard deviation for customer age is 8.0 years. Using a = 0.01, 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. Нон H₁: 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. U a comma to separate answers as needed.) Because the test statistic b. Determine the p-value for this test. The p-value is (Round to three decimal places as needed.). the null hypothesis. CETTE

A sporting goods store believes the average age of its customers is 37 or less. A random sample of 42 customers was surveyed, and the average customer age was found to be 39.3 years. Assume the standard deviation for customer age is 8.0 years. Using a = 0.01, 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. Нон H₁: 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. U a comma to separate answers as needed.) Because the test statistic b. Determine the p-value for this test. The p-value is (Round to three decimal places as needed.). the null hypothesis. CETTE

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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O A sporting goods store believes the average age of its customers is 37 or less. A random sample of 42 customers was surveyed, and the average customer age was found to be 39.3 years. Assume the standard deviation for customer age is 8.0 years. Using a = 0.01, 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. Ном H₁: 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. Us a comma to separate answers as needed.) Because the test statistic b. Determine the p-value for this test. The p-value is. (Round to three decimal places as needed.) esc D F1 @ 2 F2 20 # 3 F3 $ 4 F4 the null hypothesis. % 5 F5 MacBook Air A 6 F6 & 7 F7 * CO 8 ▶11 F8 1 9 F9 C 0 Time Remaining: 01:31:36 F10 F11 A + Next F12 G delete
Transcribed Image Text:O A sporting goods store believes the average age of its customers is 37 or less. A random sample of 42 customers was surveyed, and the average customer age was found to be 39.3 years. Assume the standard deviation for customer age is 8.0 years. Using a = 0.01, 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. Ном H₁: 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. Us a comma to separate answers as needed.) Because the test statistic b. Determine the p-value for this test. The p-value is. (Round to three decimal places as needed.) esc D F1 @ 2 F2 20 # 3 F3 $ 4 F4 the null hypothesis. % 5 F5 MacBook Air A 6 F6 & 7 F7 * CO 8 ▶11 F8 1 9 F9 C 0 Time Remaining: 01:31:36 F10 F11 A + Next F12 G delete
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