If Newt goes to LHS Lhs new customer every 15 minutes with a standard devilation of 15 minutes 4 barbers service time 30 mins deviation of 30mins M=4 barbers p=30m deviation 15m 15m divided by 30m=0.5 He must wait in line If Newt goes to SHC A customer walks in every hour with a standard deviation of 1 hour 1 barber service time 30 mins deviation of 30 mins 60mins/30mins=2 He must wait in line 30 minutes before his haircut starts