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Does drinking coffee tend to increase a student's performance in school? To answer this, I walked down to the Cafeteria and found 10 coffee-drinking students

Does drinking coffee tend to increase a student's performance in school? To answer this, I walked down to the Cafeteria and found 10 coffee-drinking students and 10 non-coffee drinking students. I asked them for their cumulative GPA and compared the GPAs for the two groups. Is this an experiment or an observational study? Group of answer choices Experiment Observational study

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