In a randomized controlled experiment
A)there is a control group and a treatment group.
B)you control for the effect that random numbers are not truly randomly generated
C)you control for random answers
D)the control group receives treatment on even days only.

Question

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A randomized controlled experiment typically involves the use of a control group and a treatment group to test the effectiveness of a particular intervention. The control group receives no (or a placebo) treatment, while the treatment group receives the active intervention being tested. This allows researchers to determine whether any observed differences between the two groups can be attributed to the treatment or to other factors.

In a Randomized Controlled Experiment