You have been asked to simulate the two queueing approaches for the FCN Bank. One approach is to have three tellers each with their own queue and the other is to have one queue feeding the three tellers. In both cases the service rate, mu, is 80 per hour for each teller. Eighty per hour equals an average service time of 45 seconds. Forty Five seconds is the average service time. Actual individual service times vary according to an exponential distribution with a mean of 45 seconds