During a year, about 150 independent storm events occur in two cities, and their average duration is

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During a year, about 150 independent storm events occur in two cities, and their average duration is 6. 4 hours. Ignoring seasonal variations, in a year of 8,760 hours,

a. Estimate the average time interval between two storms.

b. What is the probability that at least 5 days will elapse between storms?

c. What is the probability that the separation between two storms will be precisely 15 hours?

d. What is the probability that the separation between two storms will be less than or equal to 15 hours?

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