Question: A community hospital wants to estimate the body mass index (BMI) of its local population. To estimate the BMI with an error of at most

A community hospital wants to estimate the body mass index (BMI) of its local population. To estimate the BMI with an error of at most 1.0 at a 95% confidence level, what sample size should they use? The standard deviation based on available hospital patient data is 3.0.

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