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(Q11 - Q16) SLC Barber Shop A new customer walks into SLC Barber Shop every 60 minutes on average, with a standard deviation of the interarrival times being 60 minutes. At SLC Barber Shop, the average service time is 30 minutes, with a standard deviation of service times being 45 minutes. What is the demand for SLC Barber shop in [customer/minute]? Question 12 What is the average waiting time of a customer in minutes Question 13 What is the average amount of time a customer spends in the process (in minutes) including the waiting time and the service time? Question 14 What is the average number of customers waiting in line before being served? What is the average number of customers waiting in line before being served? Question 15 What is the average number of customers in the barber shop including those that are waiting in line and those receiving service? Question 16 What is the average number of customers in service