The accompanying frequency distribution summarizes sample data consisting of ages of randomly selected inmates in federal prisons. Use the data to construct a 99% confidence interval estimate of the mean age of all inmates in federal prisons. Age (years) 16-25 26-35 36-45 46-55 56-65 Over 65 Using the class limits of 66-75 for the "over 65" group, find the confidence interval. << (Round to one decimal place as needed.) Number 13 60 67 35 14 5 0

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