Question: What is the average wait time in the system? On average, how many patients are waiting in line? Jones, the Chief Operating Officer at Peace
What is the average wait time in the system? On average, how many patients are waiting in line?

Jones, the Chief Operating Officer at Peace Hospital, is planning to operate a new MRI machine at an average rate of serving one patient every 20 minutes, according to exponential distribution. Patients seeking this diagnostic service arrive at the facility on the average of two per hour with interarrival time exponentially distributed. The customers are served on a first-come, first-served bases. The COO of Peace Hospital estimates that the cost of patient waiting time, in terms of customer dissatisfaction and lost goodwill, is $10 per hour spent waiting in line. The MRI machine will operate 18 hours each day
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