Question

As reported in Runner’s World magazine, the times of the finishers in the New York City 10-km run are normally distributed with mean 61 minutes and standard deviation 9 minutes.
a. Determine the percentage of finishers with times between 50 and 70 minutes.
b. Determine the percentage of finishers with times less than 75 minutes.
c. Obtain and interpret the 40th percentile for the finishing times.
d. Find and interpret the 8th decile for the finishing times.


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  • CreatedAugust 13, 2015
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