A cholesterol test was given to ten heart patients with high cholesterol levels. The same ten heart patients are then given a new cholesterol-reducing drug for six months. Before the patients begin taking the drug, they are told to maintain their current diets and eating habits so that the effect of the drug can be more effectively determined. After taking the drug for six months, the same patients are given a cholesterol test again. The cholesterol levels before and after taking the drug are given below. The cholesterol level readings are not normally distributed. At α = .05, test to determine if the drug is helpful in reducing cholesterol levels.
A) Reject the null hypothesis.
B) Do not reject the null hypothesis.

Question

A cholesterol test was given to ten heart patients with high cholesterol levels. The same ten heart patients are then given a new cholesterol-reducing drug for six months. Before the patients begin taking the drug, they are told to maintain their current diets and eating habits so that the effect of the drug can be more effectively determined. After taking the drug for six months, the same patients are given a cholesterol test again. The cholesterol levels before and after taking the drug are given below. The cholesterol level readings are not normally distributed. At α = .05, test to determine if the drug is helpful in reducing cholesterol levels. 
A) Reject the null hypothesis. 
B) Do not reject the null hypothesis.

Quizplus · Accepted Answer

H₀: The probability distribution of cholesterol readings of patients before and after taking the drug for six months is identical. H_A: The probability distribution of cholesterol readings at the end of six months has shifted to the left of the probability distribution of cholesterol readings at the beginning of the trial. Reject H₀ if T_ ≤ T_.05,10 T_.05,10= 11 11ead627_0a02_9026_93a1_ebef21e5e5f0_TB7056_00 T_ = 1.5 + 1.5 + 8 = 11 11 = 11; therefore, we reject H₀and conclude that the drug appears to be effective in reducing cholesterol levels.

A Cholesterol Test Was Given to Ten Heart Patients with High