Question: Calls arrive at a call center with an average inter-arrival time of 10 seconds, and the inter-arrival times are exponentially distributed. The time it takes

  1. Calls arrive at a call center with an average inter-arrival time of 10 seconds, and the inter-arrival times are exponentially distributed. The time it takes to service a call by a customer service agent is exponentially distributed with an average service time of 70 seconds. The call center wants the maximum utilization of its servers to be 80%. What is the minimum number of customer service agents needed to staff the call center?

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