An machine takes on average 40 seconds more than the

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Unformatted text preview: 300 seconds. An machine takes on average 40 seconds more than the human operator to serve a customer, but with a standard deviation of only 150 seconds. Estimate the expected waiting time in queue of a customer for each of the operators, as well as the expected queue size. Note the e↵ect of variability in service time. If the cost of a human operator and the cost of a machine is the same, which one would you choose? 2...
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