Data collected at Toronto Pearson International Airportsuggests that an exponential

Chapter 4, Problem 61

(choose chapter or problem)

Data collected at Toronto Pearson International Airportsuggests that an exponential distribution with mean value2.725 hours is a good model for rainfall duration (UrbanStormwater Management Planning with AnalyticalProbabilistic Models, 2000, p. 69).a. What is the probability that the duration of a particularrainfall event at this location is at least 2 hours?At most 3 hours? Between 2 and 3 hours?b. What is the probability that rainfall duration exceedsthe mean value by more than 2 standard deviations?What is the probability that it is less than the meanvalue by more than one standard deviation?

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