In an experiment on the effects of caffeine on the alertness of college students,student volunteers are randomly assigned to two groups.One group is given caffeinated coffee while the other group is given decaffeinated coffee.All participants then play a video game to assess their mental acuity,measured as their final score on the video game.In this study,the group that is given caffeinated coffee is called the:
A) control group
B) experimental group
C) focus group
D) population
E) sample

Question

Quizplus · Accepted Answer

The group that is given caffeinated coffee is the experimental group, as they are the group that is being tested to see the effects of caffeine on mental acuity. The control group is usually given a placebo or some other non-active substance to compare the results of the experimental group to. A focus group is a type of market research study that involves gathering opinions and feedback from a group of people. Population refers to the entire group of individuals that the study is interested in, while sample refers to a subset of the population that is actually studied.

In an Experiment on the Effects of Caffeine on the Alertness