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 40.2 years. Assume the standard deviation for customer age iS 8.0 years. Using a = 0.05, compiete 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. The z-test statistic is D. (Round to two decimal places as needed.) The critical z-score(s) is(are) D. (Round to two decimal places as needed. Use a comma to separate answers as needed.) k . . Because the test statistic I ll 'the null hypothesis. b. Determine the p-value for this test. The p-value is [3 (Round to three decimal places as needed.)