Question

Is vitamin c helpful in preventing the common cold? we wish to conduct an experiment to examine if 500 mg or 1000 mg of vitamin c per day can reduce the incidence of colds. suppose that we have 150 subjects available for the study. describe how you would conduct the experiment?

Answer 1

Give 50 subjects 500 milligrams a day.

Give 50 subjects 1000 milligrams a day.

Give 50 0 milligrams a day.