3. The finish times for marathon runners during a race are normally distributed with a mean of 195 minutes and a variance of 289 minutes. What is the probability that a runner will complete the marathon within 180 minutes?

Operations Research : Applications and Algorithms
4th Edition
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Wayne L. Winston
Chapter12: Review Of Calculus And Probability
Section12.6: The Normal Distribution
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3. The finish times for marathon runners during a race are normally distributed with a mean of
195 minutes and a variance of 289 minutes. What is the probability that a runner will
complete the marathon within 180 minutes?
Transcribed Image Text:3. The finish times for marathon runners during a race are normally distributed with a mean of 195 minutes and a variance of 289 minutes. What is the probability that a runner will complete the marathon within 180 minutes?
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