Question

c. To test the efficacy of a liquid vitamin D supplement in preventing cancer, study participants are randomly assigned to one of two groups: one in which 1000 mg of liquid vitamin D is administered daily, and one in which a liquid placebo is administered daily. Both groups are followed for 15 years to determine the occurrence of cancer.

i. Study Design:

ii. Descriptive or Analytic:

Answer 1

(i)

Study design: Experimental Quantitative Research Design

Explanation:

There are 2 independentgroups:Control Group: liquid placebo is administered daily. Experimental Group: 1000 mg of liquid vitamin D is administered daily, The researcher is manipulating the Independent Variable: liquid vitamin D supplement in order to study its effect on the Dependent Variable: cancer.

(ii)

Correct option:

Analytic:

Explanation:

This research has control over variables and uses the information available to analyse these to make a critical evaluation of the efficacy of a liquid vitamin D supplement in preventing cancer,