Posted by **FRED** on Saturday, November 17, 2012 at 12:53am.

The number of arrivals per period is distributed according to the poisson with the expected value of 0.75 unit per period. the cost of waiting per unit per period is $3.20. The facility cost for serving one unit per period is $5.15. What expected service rate should be established if the service duration is distributed exponentially? What is the expected total system cost?

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