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Estimation using Normal Distribution

A random sample of 55 adults in a certain country showed an average height of six feet (72 inches) for adults. Statistics show the population standard deviation to be 3.40 inches.
Calculate the 95% confidence interval for the mean height of the adult population.

Solution Preview

Mean= M = 72 inches
Standard deviation =s = 3.40 inches
sample size=n= 55
s x=standard error of mean=s / ...

Solution Summary

Population mean is estimated using normal distribution