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A sporting goods store believes the average age of its customers is 36 or less. A random sample of 38 customers was surveyed, and the average customer age was found to be 38.9 years. Assume the standard deviation for customer age is 7.0 years. Using 0.05, 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 alterative hypotheses. H₂36 36 H₁: The 2-test statistic is 2.55 (Round to two decimal places as needed.) The critical z-score(s) in (pro) 7. (Round to two decimal places as needed. Use a comma to separate answers as needed.)

A sporting goods store believes the average age of its customers is 36 or less. A random sample of 38 customers was surveyed, and the average customer age was found to be 38.9 years. Assume the standard deviation for customer age is 7.0 years. Using 0.05, 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 alterative hypotheses. H₂36 36 H₁: The 2-test statistic is 2.55 (Round to two decimal places as needed.) The critical z-score(s) in (pro) 7. (Round to two decimal places as needed. Use a comma to separate answers as needed.)

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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A sporting goods store believes the average age of its customers is 36 or less. A random sample of 38 customers was surveyed, and the average customer age was found to be 38.9 years. Assume the standard deviation for customer age is 7.0 years. Using = 0.05, 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 alterative hypotheses. H₁: 36 H₁>36 The 2-test statistic is 2.55. (Round to two decimal places needed.) The critical z-score(s) is/are). (Round to two decimal places as needed. Use a comma to separate answers as needed.)
Transcribed Image Text:A sporting goods store believes the average age of its customers is 36 or less. A random sample of 38 customers was surveyed, and the average customer age was found to be 38.9 years. Assume the standard deviation for customer age is 7.0 years. Using = 0.05, 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 alterative hypotheses. H₁: 36 H₁>36 The 2-test statistic is 2.55. (Round to two decimal places needed.) The critical z-score(s) is/are). (Round to two decimal places as needed. Use a comma to separate answers as needed.)
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