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A sporting goods store believes the average age of its customers is 38 or less. A...

A sporting goods store believes the average age of its customers is 38 or less. A random sample of 45 customers was​ surveyed, and the average customer age was found to be 42.1 years. Assume the standard deviation for customer age is 9.0 years. Using alpha equals 0.01​, determine the p value for this test.

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