Question

In an experiment to test a new drug’s effectiveness, one group is given a larger dosage than is typically prescribed, and a second group is given a smaller dosage than is typically prescribed. Then, the results of the groups are compared to each other. What is missing that would improve this scientific design?

Answer 1

2 control group is required. 1 given right amount of drug and 2 Placebo group to see as if the drug is working or not