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A study of the ages of motorcyclists killed in crashes involves the random selection of 1 7 0 drivers with a mean of 3 2

A study of the ages of motorcyclists killed in crashes involves the random selection of 170 drivers with a mean of 32.14 years. Assuming that sigmaequals=11.2 years, construct and interpret a 95% confidence interval estimate of the mean age of all motorcyclists killed in crashes.

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