Customers Arrive at a Suburban Ticket Outlet at the Rate

question 60

Multiple Choice

Customers arrive at a suburban ticket outlet at the rate of 14 per hour on Monday mornings (exponential interarrival times) . Selling the tickets and providing general information takes an average of 3 minutes per customer, and varies exponentially. There is 1 ticket agent on duty on Mondays.
What is the average number of customers waiting in line?

• A) 1.633
• B) 2.333
• C) 2.5
• D) 3.966
• E) 4

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