A drug company wanted to test a new depression medication. The researchers found 700 adults aged 25-35 and randomly assigned them to two groups. The first group received the new drug, while the second received a placebo. After one month of treatment, the percentage of each group whose depression symptoms decreased was recorded and compared. Identify the experimental units.
A) the drug (medication or placebo)
B) the percentage who had decreased depression symptoms
C) the 700 adults aged 25-35
D) the one month treatment time

Question

Quizplus · Accepted Answer

The experimental units are the individuals or objects on which the experiment is conducted. In this case, the 700 adults aged 25-35 are the experimental units because they are the ones receiving the treatment (the new drug or placebo) and being observed for changes in depression symptoms.

A Drug Company Wanted to Test a New Depression Medication