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Solve these questions please We want to decide whether the average age of people, buried in family cemeteries in Durham between 1890 and 1920, was

Solve these questions please

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We want to decide whether the average age of people, buried in family cemeteries in Durham between 1890 and 1920, was 25. We want to hypothesis test using a 99.5% confidence interval: this means we expect to be wrong % of the time. Using a sample of size 60, we find the sample mean is 38 and the sample SD is 28. The margin of error for our confidence interval is . So the 99.5% confidence interval is [ To decide whether to reject the null hypothesis, we check whether the number belongs to the interval

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