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AP Statistics/Unit 3: Collecting Data
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Experimental Design Treatments
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A researcher designs an experiment to investigate the effect of background music on productivity. Which of the following represents a valid set of treatments for this experiment?

A

Male participants, female participants, and non-binary participants

B

Morning workers, afternoon workers, and evening workers

C

High productivity, medium productivity, and low productivity

D

Classical music, no music, and rock music

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