A clinic gives a drug to a group of ten patients and a placebo to another group of ten patients to find out if the drug has an effect on the patients' illness.
A) Observational study
B) Experiment

Question

Quizplus · Accepted Answer

This is an experiment because the patients are being randomly assigned to receive either the drug or the placebo, and the goal is to determine if the drug has an effect on the illness.

A Clinic Gives a Drug to a Group of Ten