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How can making an experiment​ single-blind or​ double-blind help?

A. If an experiment is​ blinded, the sample will be more representative of the population.
B. If an experiment is​ blinded, then differences between the control group and the treatment group are exaggerated.
C. If an experiment is​ blinded, then the sample can be less representative of the population and the data can still be used to make inferences about the population.
D. If an experiment is​ blinded, then any effect arising from psychological factors should affect all groups equally.

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Answer:

D. If an experiment is​ blinded, then any effect arising from psychological factors should affect all groups equally.

User David Hoelzer
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