Mathematics, 30.01.2021 21:40, mktdonaldson
Suppose the ages at retirement for workers in the U. S. are normally distributed with an unknown population mean and standard deviation. If a random sample of 43 retirees is taken to estimate the mean retirement age, what t-score should be used to find a 80% confidence interval estimate for the population mean? Use the portion of the table above or a calculator. If you use a calculator, round your answer to three decimal places.
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