OPERATION MANAGEMENT
2nd Edition
ISBN: 9781260242423
Author: CACHON
Publisher: MCG
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Chapter 16, Problem 18PA
Summary Introduction
To determine: The maximum average processing time for each call.
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Students have asked these similar questions
Do: 12-21 Truck drivers working for Juhn and Sons (see Problems 12-19 and 12-20) are paid a salary of $20 per hour on average. Fruit loaders receive about $12 per hour. Truck drivers waiting in the queue or at the loading gate are drawing a salary but are productively idle and unable to generate revenue during that time. What would be the hourly cost savings to the firm associated with employing two loaders instead of one?
Not this: 12-19 Juhn and Sons Wholesale Fruit Distributors employs one worker whose job is to load fruit on outgoing company trucks. Trucks arrive at the loading gate at an average of 24 per day, or 3 per hour, according to a Poisson distribution. The worker loads them at a rate of 4 per hour, following approximately the exponential distribution in service times.
Not this: 2-20 Juhn believes that adding a second fruit loader will substantially improve the firm’s efficiency. He estimates that a two-person crew, still acting like a single-server system, at the loading…
A graphics reproduction firm has four units of equipment that are automatic but occasionally become inoperative because of the need for supplies, maintenance, or repair. Each unit requires service roughly twice each hour, or, more precisely, each unit of equipment runs an average of 30 minutes before needing service. Service times vary widely, ranging from a simple service (such as pressing a restart switch or repositioning paper) to more involved equipment disassembly. The average service time, however, is five minutes. Equipment downtime results in a loss of $20 per hour. The one equipment attendant is paid $6 per hour.Using finite queuing analysis, answer the following questions: a. What is the average number of units in line? b. What is the average number of units still in operation? c. What is the average number of units being serviced?d. The fi- rm is considering adding another attendant at the same $6 rate. Should the firm do it?
The time from when a patient is discharged from North Shore Hospital to the time the discharged patient’s bed is ready to be assigned to a new patient is referred to as the bed assignment turnaround time. If the bed turnaround time is excessive, it can cause problems with patient flow and delay medical procedures throughout the hospital. This can cause long waiting times for physicians and patients thus creating customer dissatisfaction. The admissions RN has assigned a patient care associate to measure the bed turnaround time for a randomly selected bed each morning., afternoon, and evening for 30 days. Following are the bed turnaround time sample observations:
Day
Day
Bed Turnaround Times (min)
1
1
127
135
167
144
151
2
2
140
155
122
135
119
3
3
112
128
97
118
131
4
4
223
135
154
187
150
5
5
181
155
160
172
166
6
6
103
158
145
124
149
7
7
146
135
167
150
178
8
8
104
122
115
137
129
9
9
136
158
137
148
156
10
10
145
163
106
139
170
11
11
84
146
125
98…
Chapter 16 Solutions
OPERATION MANAGEMENT
Ch. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - Prob. 4CQCh. 16 - Which of the following best reflects pooling...Ch. 16 - Prob. 6CQCh. 16 - Prob. 7CQCh. 16 - Prob. 1PACh. 16 - Prob. 2PACh. 16 - Prob. 3PA
Ch. 16 - Prob. 4PACh. 16 - Prob. 5PACh. 16 - Prob. 6PACh. 16 - Prob. 7PACh. 16 - Prob. 8PACh. 16 - Prob. 11PACh. 16 - Prob. 12PACh. 16 - Prob. 13PACh. 16 - Prob. 14PACh. 16 - Prob. 15PACh. 16 - Prob. 16PACh. 16 - Prob. 17PACh. 16 - Prob. 18PACh. 16 - Prob. 19PACh. 16 - Prob. 20PACh. 16 - Prob. 21PACh. 16 - Prob. 22PA
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- A small call center normally has four employees answering calls while open. On average, seven calls arrive every four minutes. Under normal operating conditions, each employee on average handles each call in 3.3 minutes. But today, one employee has the flu, so the center needs to operate with three employees during this time. The manager is nervous that it may be supply-constrained and so she directs her employees to hurry up their processing of calls today. What is the maximum average processing time for each call that they need to achieve today so that they have a stable queue? Note: Round your answer to 2 decimal places. Answer is complete but not entirely correct. Maximum average processing time 4,73 minutesarrow_forwardExperience the Tour de France (ETF) is a specialty travel agent. It arranges vacations for amateur cyclists who want to experience the Tour de France by riding through one or more stages in the race. It has five people who take calls from clients. Each call lasts on average 25 minutes, with a standard deviation of 50 minutes. A call arrives on average every 20 minutes with a standard deviation of 20 minutes. (Do not round intermediate calculations. Round your answer to two decimal places.) On average, how many minutes does a caller wait before talking to an agent? minutesarrow_forwardWhat is the average utilization of the servers in a system that has three servers? On average 15 customers arrive every 15 minutes. It takes a server exactly three minutes to wait on each customer.arrow_forward
- Suppose a coffee shop order and fulfillment process is configured simply as a single queue with two steps: wait and service. Customers enter, wait their turn, and then are served, by placing and receiving their order all at once. Suppose that an average of 10 customers per hour enter the coffee shop while the shop is open. On average, there are two customers waiting in line to place their orders. It takes an average of 2 minutes to go through the service step, that is, it takes 2 minutes to complete the second step of placing and receiving the order. In steady state, O The average wait time before placing an order is 12 minutes. O The average time between customer arrivals is 5 minutes. O None of the answers are correct. There is an average of one customer being served at a time. O The average total time to wait and be served is 15 minutes.arrow_forwardA company that makes shopping carts for supermarkets and other stores recently purchased some new equipment that reduces the labor content of the jobs needed to produce the shopping carts. Prior to buying the new equipment, the company used five workers, who produced an average of 80 carts per hour. Workers receive $10 per hour, and machine cost was $40 per hour. With the new equipment, it was possible to transfer one of the workers to another department, and equipment cost increased by $10 per hour while output increased by four carts per hour. Compute labor productivity under each system. Use carts per worker per hour as the measure of labor productivity. Compute the multifactor productivity under each system. Use carts per dollar cost (labor plus equipment) as the measure.arrow_forwardAn engineering i rm retains a technical specialist to assist four design engineers workingon a project. The help that the specialist gives engineers ranges widely in time consumption.The specialist has some answers available in memory, others require computation,and still others require signii cant search time. On the average, each request for assistancetakes the specialist one hour.The engineers require help from the specialist on the average of once each day. Becauseeach assistance takes about an hour, each engineer can work for seven hours, on the average,without assistance. One further point: Engineers needing help do not interrupt if thespecialist is already involved with another problem.Treat this as a i nite queuing problem and answer the following questions:a. How many engineers, on average, are waiting for the technical specialist for help?b. What is the average time that an engineer has to wait for the specialist?c. What is the probability that an engineer will have to wait…arrow_forward
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