During the summer at a small private airport in western
During the summer at a small private airport in western Nebraska, the unscheduled arrival of airplanes is Poisson distributed with an average arrival rate of 1.12 planes per hour.
a. What is the average inter arrival time between planes?
b. What is the probability that at least 2 hours will elapse between plane arrivals?
c. What is the probability of two planes arriving less than 10 minutes apart?

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