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Dental General 0eb49e6d

What is the purpose of a control group in an experimental study?

A
It permits an ethical alternative for patients who do not wish to be subjected to an experimental treatment
B
It allows larger numbers of patients to be used, thus increasing the power of the statistical techniques used
C
It helps to eliminate alternative explanations for the results of the study
D
It reduces the likelihood of making a type II error in hypothesis testing
High-Yield Explanation
No explanation provided.
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