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Queueing system with exponential arrival, service

  1. Nov 23, 2006 #1
    I'm having troubles with the basics here--do I use exponential process or poisson?

    Suppose a queueing station has two servers, an exponential inter-arrival time for customers with a mean of 2 hours and an exponential service time for service with mean of 2 hours. Furthermore a customer has just arrived at 12 noon.

    1. What is the probability that the next arrival will be before 1:45pm?

    I have tried using exponential distribution with lambda = 0.5...but can't figure out what I'm doing wrong.

  2. jcsd
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