Weights of men in one age group are normally distributed with a standard deviation ? of 9
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Question:
Weights of men in one age group are normally distributed with a standard deviation ? of 9 lb. A researcher wishes to estimate the mean weight of all men in this age group. Find how large a sample must be drawn in order to be 90 percent confident that the sample mean will not differ from the population mean by more than 2.96 lb.
Related Book For
Statistics Principles and Methods
ISBN: 978-0470904114
7th edition
Authors: Richard A. Johnson, Gouri K. Bhattacharyya
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