Problem: A doctor released the results of clinical trials for a vaccine to prevent a particular disease. In these clinical? trials, 200,000 children were randomly divided in two groups. The subjects in group 1? (the experimental? group) were given the? vaccine, while the subjects in group 2? (the control? group) were given a placebo. Of the 100,000 children in the experimental? group, 21 developed the disease. Of the 100,000 children in the control? group, 43 developed the disease.
What is the response? variable? Need Assignment Help?
A. Whether the vaccine prevented the disease or not
B. Whether the subject contracted the disease or not
C. Whether the subject was in group 1 or group 2
D. The amount of the vaccine received