To test a new drug for treating an ailment, a pharmaceutical company divided 100 adult volunteers into two groups, a male group and a female group. One group received the drug and one group received a placebo. After one month, the adults who took the drug were 16% less likely to experience symptoms, while those who took the placebo experienced no significant change.
The study_______ a randomized comparative experiment. ("is", or "is not")
Let's assume the study is a randomized comparative experiment, describe the treatment, the treatment group, and the control group.
The treatment is _______ . (Check the hints for a phrase bank to help fill in the blanks.)
The treatment group is _______ .
The control group is _______ .