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Q2) When a motorist stops at a red light at a certain intersection, the waiting time for the light to turn green, in seconds, is

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Q2) When a motorist stops at a red light at a certain intersection, the waiting time for the light to turn green, in seconds, is uniformly distributed on the interval (5, 40). Find the following a) the probability that the waiting time is between 10 and 20 seconds. b) the average waiting time c) the standard deviation of the waiting time

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