A researcher is interested in determining the average number of years of employee retention in a company.If past information shows a population standard deviation of 9 months, what sample size should be taken so that, at 95% confidence, the margin of error will be 3 months or less?

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The Answer of A researcher is interested in determining the average number of years of employee retention in a company.If past information shows a population standard deviation of 9 months, what sample size should be taken so that, at 95% confidence, the margin of error will be 3 months or less?

A Researcher Is Interested in Determining the Average Number of Years