[See Solution] An investigator wants to design a study to estimate the difference in the mean BMI between boys and girls age 12 living in New York City.
Question: An investigator wants to design a study to estimate the difference in the mean BMI between boys and girls age 12 living in New York City. How many boys and girls are needed to ensure that a 95% confidence interval estimate for the difference in mean BMI between boys and girls has a margin of error not exceeding 2 units? Use the estimate of the variability in BMI from Problem 7.
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[Solution Library] In a survey of 500 vacationers from USA, 240 said that
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[Solution Library] Here’s to your health, folks! A recent survey of 507
All Tricks in the Book to Understand the Normal Probability - MathCracker.com