Question: 3. Benny the barber (see the previous problem) is considering the addition of a second chair. Customers would be selected for a haircut on a

3. Benny the barber (see the previous problem) is

3. Benny the barber (see the previous problem) is considering the addition of a second chair. Customers would be selected for a haircut on a FCFS basis from those waiting. Benny has assumed that both barbers would take an average of 20 minutes to give a haircut, and that business would remain unchanged with customers arriving at a rate of two per hour. Find the following information to help Benny decide if a second chair should be added: a. The average number of customers waiting. b. The average time a customer waits. c. The average time a customer is in the shop

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