Question

Select the correct answer.A scientist is testing the effectiveness of a new medication. The medication is to be tested on two groups of subjects. One group of subjects receives a placebo pill, while the other group receives the actual medication.Which of the following methods is being used to investigate the effectiveness of the medication?A. surveyB. controlled experimentC. separation studyD. observational study

Answer 1

We have a test where we compare the results of two groups: one receives a placebo and the other receives the actual medication.

This seems to be a controlled study:

1) It has a control group, which is the group that does not receives the medication but a placebo.

2) We have an experimental group that does receive the medication.

3) The effectiveness of the medication is the dependent variable.

4) The use of the medication is the independent variable.

5) There is no other difference between the experimental and control group rather than the independent variable.

Answer: Controlled experiment (Option B)