Mathematics, 09.12.2020 06:20 neariah24

Marc wants to know if the mean age of the prison population in his city is less than 26 years. He obtains a random sample of 25 prisoners and finds a mean age of 24.4 years and a standard deviation of 9.2 years.
At a significance level of 0.05, what is his conclusion?

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Marc wants to know if the mean age of the prison population in his city is less than 26 years. He o...