Weights of women in one age group are normally distributed with a standard deviation of 18 lb. A researcher wishes to estimate the mean weight of all women in this age group. How large a sample must be drawn in order to be 90% confident that the sample mean will not differ from the population mean by more than 2 lb?
Weights of women in one age group are normally distributed with a standard deviation of 18 lb. A researcher wishes to estimate the mean weight of all women in this age group. How large a sample must be drawn in order to be 90% confident that the sample mean will not differ from the population mean by more than 2 lb?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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