$($Q$11-$ Q$16)$ 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.

Question $11$

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?