MOD D ALL ANSWERS 100% CORRECT FALL -2021 SOLUTION GUARANTEED GRADE A+

MOD D- WAITING LINE MODELS • Which of the following represents an unlimited queue? toll booth serving automobiles on an interstate • An airline ticket counter, with several agents for one line of customers, is an example of which of the following? multiple-server, single-phase system • A concert hall, employing both ticket takers and ushers to seat patrons, behaves typically as which of the following? multiple-server, multiphase system • Which of the following is a measure of queue performance? probability of a specific number of customers in the system, average queue length, average waiting time in the line, utilization factor for the system • A waiting line model meeting the assumptions of M/M/1 has an arrival rate of 2 per hour and a service rate of 6 per hour. What is the utilization factor for the system? 0.33 • Which one of the following is NOT a characteristic of a Model B or M/M/S system? single server • Customers arrive at Rich Dunn's Styling Shop at a rate of 4 per hour, distributed in a poisson fashion. Service times follow a negative exponential distribution, and Rich can perform an average of 8 haircuts per hour. a) The average number of customers waiting for haircuts = .5 customers b) The average number of customers in the shop = 1 customers c) The average time a customer waits until it is his or her turn = 7.5 minutes (NOT 0.13, LOOK AT THE MINUTES COLUMN, NOT THE VALUE COLUMN BECAUSE IT’S ASKING FOR MINUTES, NOT HOURS!)