A scientist has designed a weight-loss pill and wants to test it on people. She...
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A scientist has designed a weight-loss pill and wants to test it on people. She believes that the pill will cause people to lose 2 pounds while they are sleeping.In order to test this pill, she gives 10 people the pill before they go to sleep for 8 hours, and then weighs them in the morning.She gives another 10 people a different weight-loss pill before they go to sleep for 8 hours, and then weighs them in the morning.This experiment is missing the _____ group.
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