Determine whether the study depicts an observational study or an experiment
-A medical researcher obtains a sample of adults suffering from diabetes. She randomly assigns 95 people to atreatment group and 95 to a placebo group. The treatment group receives a medication over a period of threemonths and the placebo group receives a placebo over the same time frame. At the end of three months thepatientsʹ symptoms are evaluated.
A) experiment
B) observational study

Question

Quizplus · Accepted Answer

The study is an experiment because the researcher actively manipulates the conditions by randomly assigning participants to either a treatment or placebo group and then measures the effect of the manipulation on the outcome (patients' symptoms).

Determine Whether the Study Depicts an Observational Study or an Experiment