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This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.
Correlation and Causation in Statistics - SAT
A researcher wanted to know if there is an association between exercise and sleep for the popultation of 16-year-olds in the United States. She obtained survey responses from a random sample of 2000 United States 16-year-olds and found convincing evidence of a positive association between exercise and sleep. Which of the following conclusions is well supported by the data?
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