(See Solution) A researcher is interested in determining the average number of years employees of a company stay with the company. If past information shows
Question: A researcher is interested in determining the average number of years employees of a company stay with the company. If past information shows a standard deviation of 7 months, what size sample should be taken so that at 95% confidence the margin of error will be 2 months or less?
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(All Steps) In a random sample of 400 registered voters, 120 indicated
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