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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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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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