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posted by  bexnicious on 10/5/2008 5:58:53 PM  |  status: Live  

continuous random variables II

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The service time, Ti, for a person in a grocery line is distributed according to an exponential distribution with parameter λ = 5 customers per hour. What distribution governs the time you must wait to begin to be served if 3 customers are in front of you? What is the probability that you must wait more than 0.5 hour?
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