Operations Management: Sustainability and Supply Chain Management (12th Edition)
12th Edition
ISBN: 9780134130422
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Chapter 15, Problem 10DQ
Summary Introduction
To determine: The effective measures for dispatching rules
Introduction: Assignment method is one of the methods available in the process of optimization. Here, the jobs would be assigned to every available resource.
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Question (13-15):
A Car service station owns one washing machine that serves 3.5 cars every 45 minutes.
Moreover, 2.5 customers arrive at the station every 40 minutes. Answer the following
questions:
13. Determine the expected waiting time in the car service:
D
D
3.021
D
4.621
с
14. Determine the expected number of customers in the queue:
0.9031
C
1.0909
C
3.872
B
0.3001
B
0.875
B
3.287
15. Determine the probability that customers are waiting more than 45 minutes in the
queue:
A
0.4041
A
1.256
A
4.099
0.5981
QUESTION #4
Four delivery trucks are in a queue at a Tool Company with
only one service bay. The trucks are identified by the sequence
in which they arrived at the Company. Assume the time is
10:00 a.m. The table shows the times necessary to unload each
vehicle and the periods when the commodities they contain
are expected in the factory.
Determine the schedules that result for each of the rules SPE,
CR EDD, and FSFC. In each case compute the average tardiness,
the number of tardy jobs, and mean flow time.
Truck
1
2
3
4
5
Unloading Time
(minutes)
23
16
39
12
30
Time Material
is Due
10:15 AM
10:40 AM
10:55 AM
10:30 AM
10:40 AM
Question 1
When a paper pick lists method is used, the picker attaches a label to each item picked and returns any unused labels to the
supervisor's office.
A) True
B) False
When a paper pick lists method is used, it helps in eliminating a step at the dispatch area as address labels are already attached.
A True
(в) False
When a paper pick lists method is used, the picker can effectively use different types of equipment such as trolley, cage pallet truck,
and forklift truck
A True
B) False
Chapter 15 Solutions
Operations Management: Sustainability and Supply Chain Management (12th Edition)
Ch. 15 - Prob. 1DQCh. 15 - Prob. 2DQCh. 15 - Prob. 3DQCh. 15 - Prob. 4DQCh. 15 - Prob. 5DQCh. 15 - Prob. 6DQCh. 15 - Prob. 7DQCh. 15 - Prob. 8DQCh. 15 - Prob. 9DQCh. 15 - Prob. 10DQ
Ch. 15 - Prob. 11DQCh. 15 - Prob. 12DQCh. 15 - Prob. 13DQCh. 15 - Prob. 1PCh. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Prob. 5PCh. 15 - Prob. 6PCh. 15 - Prob. 7PCh. 15 - Prob. 8PCh. 15 - Prob. 9PCh. 15 - Prob. 10PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 1CSCh. 15 - Prob. 2CSCh. 15 - Prob. 3CSCh. 15 - Prob. 4CSCh. 15 - Prob. 1.1VCCh. 15 - Prob. 1.2VCCh. 15 - Prob. 1.3VCCh. 15 - Prob. 2.1VCCh. 15 - Prob. 2.2VCCh. 15 - Prob. 2.3VCCh. 15 - Prob. 2.4VC
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