85 EDFN 1090/1092 Assignment #6 Carry out all nine 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. 2. According to the National Association of Builders, the average single-family home size in the United States is normally distributed with a mean u = 2392 square feet and a standard deviation o = 760 square feet. Sixty single-family houses are randomly selected from Cleveland, and the mean size is 2,025 square feet. Is the average square footage of houses in Cleveland different than the population mean? Assume a = .05