Copyright 2009 John Wiley & Sons, Inc.5-21 Basic Single-Server Model  Assumptions Poisson arrival rate Poisson arrival rate exponential service times exponential service times first-come, first- served queue discipline first-come, first- served queue discipline infinite queue length infinite queue length infinite calling population infinite calling population  Computations λ = mean arrival rate λ = mean arrival rate μ = mean service rate μ = mean service rate n = number of customers in line n = number of customers in line
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