Q1) FDA performed study to estimate effectiveness of a drug it recently developed to decrease level of Total Blood Cholesterol. In study, 20 persons with high level cholesterol (desirable level is less than 200 milligrams per decilitre of blood (mg/dL)) were administered recently developed pill. Pharmaceutical company which produces pill claims that patients with high cholesterol level will experience reduction of at least 50 mg/dL by using this pill. Results are listed in table below. You have been asked to test whether data support company's claim? Test at α = 0.05. Suppose normality.