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The accompanying frequency distribution summarizes sample data consisting of ages of randomly selected inmates in federal prisons. Use the data to construct a 95%

The accompanying frequency distribution summarizes sample data consisting of ages of randomly selected inmates in federal prisons. Use the data to construct a 95% confidence interval estimate of the mean age of all inmates in federal prisons. Age (years) Number 16-25 13 26-35 61 36-45 66 46-55 37 56-65 13 Over 65 4 Using the class limits of 66-75 for the "over 65" group, find the confidence interval.

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