The number of weekly breakdowns of a computer is a random variable having a Poisson distribution with mean 0.2. (a) What is the probability that the computer will operate without a breakdown for 3 consecutive weeks? (Ans: ? 0.5488) (b) Find the percent of the time that the interval between breakdowns of the computer will be less than 1 week. (Ans: ? 0.1813)
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