An economist wants to estimate mean annual income from the first year of work for college graduates
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An economist wants to estimate mean annual income from the first year of work for college graduates who have had the profound wisdom to take a statistics course. How many such incomes must be found if she wants to be 95% confident that the sample mean is within $750 of the true population mean? Assume that a previous study has revealed that for such incomes, s = +6,250.
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Related Book For
Statistical Reasoning For Everyday Life
ISBN: 9780321904645
4th International Edition
Authors: Jeffrey Bennett, William L. Briggs, Mario F. Triola
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