Question

A random sample of 25 men’s resting pulse rates shows a mean of 72 beats per minute and a standard deviation of 13.
a. Find a 95% confidence interval for the population mean pulse rate for men, and report it in a sentence. You may use the table given for Exercise 9.25.
b. Find a 99% confidence interval.
c. Which interval is wider and why?


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  • CreatedJuly 16, 2015
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