Question

1.You wish to compare four treatments for effectiveness in preventing flu: (1) a flu vaccine, (2) 1 gram of vitamin C per day, (3) a turmeric curcumin complex pill, and (4) a placebo taken daily. (A placebo is a dummy pill which contains no active ingredient and should have no physical effect.) a. In clinical experiments involving people, it is strongly recommended that a placebo be included among the treatments. Explain why. What is an appropriate response variable? Suppose that 860 volunteer subjects are available for the study. Draw a diagram showing a design of your experiment. Clearly indicate where randomization, replication and control are applied in the experiment. b. C.

Answer 1