A researcher wants to investigate the effectiveness of a cholesterol-lowering me

Question

A researcher wants to investigate the effectiveness of a cholesterol-lowering medication. The 450 participants are first divided into two groups - those suffering from diabetes and those not suffering from diabetes. Within each group the participants are randomly assigned to one of three groups. The first group will receive a low dose of the medication, the second group will receive a high dose of the medication, and the third group will receive a placebo. At the end of a six-month period, each person's cholesterol will be tested and the change in their cholesterol level will be recorded.

A) Completely randomized over two factors (medication and diabetes), blocked by cholesterol level

B) Completely randomized over one factor (diabetes), blocked by medication

C) Completely randomized over one factor (medication), blocked by diabetes and cholesterol level

D) Completely randomized over one factor (medication), blocked by diabetes

E) Completely randomized over two factors (medication and diabetes)

Explanation / Answer

Here we are testing the effect of medication on cholesterol level, blocked by diabetes. Hence,

This will be a completely randomized over one factor (medication), blocked by diabetes.

Option D is correct.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.