A pharmaceutical company wishes to study a possible new headache medicine. They are doing human trials with 1000 volunteers who experience frequent headaches. The researchers will need to ____________.
A)have 10 volunteers in the control group
B)put all women in the control group and all men in the experimental group
C)control for the type of headache-stress, migraine, or other causes
D)divide the groups by level of health
E)give all 1000 volunteers the same amount of the new medication

Question

Quizplus · Accepted Answer

Controlling for the type of headache ensures that the study results are not biased by different headache causes, allowing for a more accurate assessment of the medication's effectiveness.

A Pharmaceutical Company Wishes to Study a Possible New Headache