The body mass index (BMI) of all American young women is believed to follow a Normal distribution
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The body mass index (BMI) of all American young women is believed to follow a Normal distribution with a standard deviation of about 7.5. How large a sample would be needed to estimate the mean BMI μ in this population to within ±1 with 99% confidence?
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In practice we rarely know the population standard deviation In the past when the sample size was la...View the full answer
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Dudhat Vaidehi
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