OPERATION MANAGEMENT
2nd Edition
ISBN: 9781260242423
Author: CACHON
Publisher: MCG
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Question
Chapter 18, Problem 4CQ
Summary Introduction
To determine: Whether the average flow time is lowered in first come first serve than in shortest processing time is true or false?
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Process time is part of cycle time. The process time of a business process refers to:
a. alWways is the largest part of cycle time.
b. timMe a customer spends waiting in a queue (e.g., time customer spends waiting in a drive-thru line)
c. is ofFten considered to be value-added time to the customer.
d. timMe from beginning to completion of the business process.
A lab provides ultrasound service to patients. The service process consists of two
steps:
1. Registration. Performed by a receptionist (Salary rate = $25/hr; Process time
= 6 minutes/patient)
2. Ultrasound scan. Performed by a technician (Salary rate = $30/hr; Process
time = 20 minutes/patient)
Note that the ultrasound images need to be read by radiologists, but we assume that
they have an ample capacity and thus will not model the role in the service process.
Currently, the lab has 2 receptionists and 3 technicians. The manager anticipates
demand to grow to 14 patients/hr in the near future. Thus, he plans to hire more
receptionists and/or technicians to increase the service capacity to at least 14
patients/hr. What would be the extra payroll cost (in dollars per hr)?
Depending on how jobs arrive to a resource, it is possible that the average flow time of the jobswith first-come-first-served is lower than that with shortest processing time. True or false?a. Trueb. False
Chapter 18 Solutions
OPERATION MANAGEMENT
Ch. 18 - Prob. 1CQCh. 18 - Prob. 2CQCh. 18 - Prob. 3CQCh. 18 - Prob. 4CQCh. 18 - Prob. 5CQCh. 18 - Prob. 6CQCh. 18 - With weighted shortest processing time, jobs are...Ch. 18 - Prob. 8CQCh. 18 - Prob. 9CQCh. 18 - Prob. 10CQ
Ch. 18 - Prob. 11CQCh. 18 - Prob. 12CQCh. 18 - Prob. 13CQCh. 18 - Prob. 14CQCh. 18 - Prob. 15CQCh. 18 - Prob. 16CQCh. 18 - Prob. 1PACh. 18 - Prob. 2PACh. 18 - Prob. 3PACh. 18 - Prob. 4PACh. 18 - Prob. 5PACh. 18 - Prob. 6PACh. 18 - Prob. 7PACh. 18 - Prob. 8PACh. 18 - Prob. 9PACh. 18 - Prob. 10PACh. 18 - Prob. 11PACh. 18 - Prob. 12PACh. 18 - Prob. 13PACh. 18 - Prob. 14PACh. 18 - Prob. 15PACh. 18 - Prob. 16PACh. 18 - Prob. 17PACh. 18 - Prob. 18PACh. 18 - Prob. 19PACh. 18 - Prob. 1CCh. 18 - Prob. 2CCh. 18 - Prob. 3CCh. 18 - Prob. 4C
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