Zappos is an online retailer based in Nevada and employs 1,300 employees. One of their competitors, Amazon.com, would like to test the hypothesis that the average age of a Zappos employee is less than 36 years old. A random sample of 22 Zappos employees was found to have an average age of 33.9 years. The standard deviation for this sample was 4.1 years. Amazon would like to set α = 0.025. The critical value for this hypothesis test would be ______.

Question

Quizplus · Accepted Answer

The critical value for a two-tailed test with α = 0.025 and degrees of freedom = 21 is 2.080.

Zappos Is an Online Retailer Based in Nevada and Employs