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Suppose that the times required for a cable company to ?x cable problems in its customers’ homes are

Suppose that the times required for a cable company to ?x cable problems in its customers’ homes are uniformly distributed between 40 minutes and 65 minutes.(a) What is the probability that a randomly selected cable repair visit will take at least 50 minutes? (b) What is the probability that a randomly selected cable repair visit will take at most 55 minutes? (c) What is the expected length of the repair visit? (d) What is the standard deviation?

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