Step by step solution

Carry out ALL 9 steps of the hypothesis testing procedure. 1. Assume that anxiety scores as measured by an anxiety assessment inventory are normally distributed with u = 20 and o = 4. A sample of 4 patients who are undergoing treatment for anxiety is randomly selected, and their mean anxiety score x = 22. Is the average anxiety score from patients who are under treatment significantly different from 20"? Assume a = 10