A Northwest Airlines ticket counter forecasts that 200 people per hour will need to check in. It takes an average of two minutes to service a customer. Assume that interarrival times and service times are exponential and that all customers wait in a single line for the first available agent.
a If we want the average time a customer spends in line and in service to be 30 minutes or less, how many ticket agents should be on duty?
b If we want 95% of all customers to wait 45 minutes or less in line, how many ticket agents should be on duty?
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