For the scenario in Problem 1(a),
a. Determine the sample size for power levels ranging from 0.6 to 0.9, in increments of 0.05. Plot the sample size versus power. Comment on the observed relationship.
b. Determine the sample size for absolute differences in average cholesterol levels ranging from 20 mg/dl to 70 mg/dl, in increments of 10 mg/dl. Plot the sample size versus the absolute difference. Comment on the observed relationship.