Birthweights of full-term newborns in the United States are approximately normally distributed with a mean of about

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Birthweights of full-term newborns in the United States are approximately normally distributed with a mean of about 3,500 grams and a standard deviation of about 450 grams. We will assume this is exactly true. 

a. What is the probability that a randomly chosen newborn has a birthweight more than 4,000 grams? 

b. What is the probability that five randomly chosen newborn have a mean birthweight more than 4,000 grams?

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Introduction To Statistical Investigations

ISBN: 9781119683452

2nd Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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