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In 2002, the mean age of an inmate on death row was 40.7 years, according to...

In 2002, the mean age of an inmate on death row was 40.7 years, according to data obtained from
the U.S. Department of Justice. A sociologist wants to test the claim that the mean age of a death row inmate
has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 37.9, with a
standard deviation of 9.6. Test the sociologist’s claim using a 1% level of significance.

Math   Statistics-And-Probability   
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