Slc barber shops (q1 – q9) randy needs to decide where to get a haircut. he has narrowed the choice down to two local hair salons – large hair salon (lhs) and small hair cutters (shc). a new customer walks into lhs every 15 minutes on average, with a standard deviation of 15 minutes. at shc, a customer walks in every hour on average, with a standard deviation of 1 hour. lhs has a staff of 4 barbers, while shc has 1 barber. the average service time at both salons is 30 minutes, with a standard deviation of 30 minutes. q1. if randy walks into shc, how long, on average, will he wait in line (in minutes) before he receives a haircut? (only include the waiting time, not any service time)