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This week, a very large running race (5K) occured in Denver. The times were normally distributed, with a mean of 22.04 minutes and a standard

This week, a very large running race (5K) occured in Denver. The times were normally distributed, with a mean of 22.04 minutes and a standard deviation of 4.25 minutes.

a. What percent of runners took 36.915 minutes or less to complete the race?


b. What time in minutes is the cutoff for the fastest 59.87 %?


c. What percent of runners took more than 20.9775 minutes to complete the race?

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