Question

17. Testing Lipitor In a clinical trial of the cholesterol drug Lipitor, subjects were partitioned into groups given a placebo or Lipitor doses of 10 mg, 20 mg, 40 mg, or 80 mg. The subjects were randomly assigned to the different treatment groups (based on data from Pfizer, Inc.). would it be a random,systematic, onvience, stratified, or cluster.

Answer 1

Answer:

Stratified

Step-by-step explanation:

In Stratified Sampling, members of the population are divided into subgroups before a random sample of each group is taken.

Therefore in the case of the clinical trial presented, the sampling method used is stratified.