Question: Physicians health study Read about the first Physicians Health Study at phs.bwh.harvard.edu. a. Explain whether it was (i) an experiment or an observational study and

Physicians’ health study Read about the first Physicians’ Health Study at phs.bwh.harvard.edu.

a. Explain whether it was (i) an experiment or an observational study and (ii) a retrospective or prospective study.

b. Identify the response variable and the explanatory variable(s) and summarize results.

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