(Answered) Question heart attacks and height researchers who examined

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Question: Heart attacks and height. Researchers who examined health records of thousands of males found that men who died of myocardial infarction (heart attack) tended to be shorter than men who did not.

a) Is this an experiment? If not, what kind of study is it?

b) Is it correct to conclude that shorter men are at higher risk for heart attack? Explain.

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