Assume that the body mass index bmi of all american young


Assume that the body mass index (BMI) of all American young women follows a Normal distri-bution with standard deviation σ= 7.5. How large a sample would be needed to estimate the mean BMI μ in this population to within ±0.8 with 98% confidence?

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Mathematics: Assume that the body mass index bmi of all american young
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