Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 16, Problem 4CQ
Which of the following best reflects pooling capacity to reduce restroom queue lengths?
- a. Add more toilets to increase capacity.
- b. Install a flexible partition that can alter the size of the women’s and the men’s restrooms.
- c. Convert the separate men’s and women’s rooms into a single unisex restroom (that both men and women can use).
- d. Remove mirrors in the restroom to decrease the time users spend in the restroom.
- e. Add automatic flush capability to each toilet to decrease processing times.
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Students have asked these similar questions
In an M/MA queueing system, the arrival rate is 3 customers per hour and the service rate is 5 customers per hour. If the service
process is automated (resulting in no variation in service times but the same service rate), what will be the resulting performance
measurements? (Round your answers to 3 decimal places.)
a. What is the utilization?
Utilization
b. What is the expected number of customers in the system (L)?
Number of customers
c. What is the expected waiting time (in hours) for the system (W)?
Waiting time(in hours)
Which of the following best reflects pooling capacity to reduce restroom queue lengths?a. Add more toilets to increase capacity.b. Install a flexible partition that can alter the size of the women’s and the men’srestrooms.c. Convert the separate men’s and women’s rooms into a single unisex restroom (thatboth men and women can use).d. Remove mirrors in the restroom to decrease the time users spend in the restroom.e. Add automatic flush capability to each toilet to decrease processing times.
Which of the following is a qualitative factor in a simulation of a grocery store checkout process?
A. the interarrival time of customers to the queue
B.the number of full-service checkout lanes that are open
C. the number of express lanes that are open
D. the presence of self-checkout lanes
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- 3. Indicate whether each of the following applications would be suitable for a queue.a. An ailing company wants to evaluate employee records so as to lay off some workerson the basis of service time (the most recently hired employees are laid off first).b. A program is to keep track of patients as they check into a clinic, assigning them todoctors on a first come, first served basis.c. A program to solve a maze is to backtrack to an earlier position (the last place where achoice was made) when a dead-end position is reached.d. An inventory of parts is to be processed by part number.e. An operating system is to process requests for computer resources by allocating theresources in the order in which they are requested.f. A grocery chain wants to run a simulation to see how the average customer wait timewould be affected by changing the number of checkout lines in its stores.g. A dictionary of words used by a spelling checker is to be initialized.h. Customers are to take numbers at a…arrow_forwardTrue or False? The average number of customers in queue plus the number of servers equals the average number of customers in the system. The main cause of delay at Logan Airport was overbooking, and building a new runway solved the delay problem. If a company hopes to increase the capacity of a process, the company needs to try to shorten the process’s cycle time. Little’s Law only applies to an M/M/1 queue, which is a special case of a G/G/C queue. If a queuing system has deterministic arrival rate λ and service rate μ, and λ < μ, then Lq = 0 in this queue.arrow_forwardIn modeling a waiting line problem, 1/ μ and 1/ λ represent the mean values of: a. Arrival time and service rate respectively (i.e. in that order). b. Inter-arrival time and service time respectively. c. Service time and inter-arrival time respectively. d. Wait time and queue time respectively.arrow_forward
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