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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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unicorngirl13 unicorngirl13
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4 years ago
Determine whether the study depicts an observational study or an 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.

▸ observational study

▸ experiment
Textbook 
Statistics: Informed Decisions Using Data

Statistics: Informed Decisions Using Data


Edition: 5th
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binvabinva
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4 years ago
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unicorngirl13 Author
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4 years ago
Thanks
Smair87
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Yesterday
Thank you, thank you, thank you!
jblazah
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2 hours ago
Thanks for your help!!
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