Dr.Martinez is doing a research study examining the effects of a new headache medication on migraine pain.He decides to divide his participants up into four subject groups,each one of which will receive a different amount of medication to take when they have a migraine.The participants in group one receive a pill with 10 milligrams of the experimental medication,while the participants in group two receive a pill with 20 milligrams.Those assigned to group three receive a pill with 30 milligrams,while those in group four receive a placebo pill that has zero milligrams of the medication.How many experimental groups are in this research study?
A) 1
B) 2
C) 3
D) 4

Question

Quizplus · Accepted Answer

There are three experimental groups in this study, which are the groups receiving 10, 20, and 30 milligrams of the medication. The fourth group, receiving a placebo, serves as the control group and is not considered an experimental group.

DrMartinez Is Doing a Research Study Examining the Effects of a New