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Business, 24.01.2020 02:31 sanchezp0821

Determine whether the study depicts an observational study or a designed experiment. a researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. after interviewing all 200 participants in the study, the researcher compared the rate of depression among the smokers with the rate of depression among nonsmokers. a. observational study. b. designed experiment

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Determine whether the study depicts an observational study or a designed experiment. a researcher ob...
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