An insurance company wants to study whether offering incentives for preventative care reduces overall health care costs. they select a random sample of 200 of their customers.
half of the smokers are randomly assigned to be offered in the incentive, and the other half are assigned to the control group. the same method is used to randomly assign half of the nonsmokers to the treatment group and half of the control group.
what type of experiment design in this
choose 1
a) systematic
b) randomized block
c) completley randomized
d) cluster
e) matched pairs