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Distance runners are known to have lower pulse rates than their contemporaries. Suppose pulse rates are measured on a random sample of 25 runners 5 minutes after they have completed a 10-kilometer run. The data yield y = 58:2 beats per minute and

s² = 72.25.

a. Compute the standard error of the average.

b. Use the standard error to set a 95% confidence interval for the mean pulse rate of distance runners.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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