PRIN.OF OPERATIONS MANAGEMENT-MYOMLAB
11th Edition
ISBN: 9780135226742
Author: HEIZER
Publisher: PEARSON
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Chapter 15, Problem 25P
a)
Summary Introduction
To determine: The best sequence for various rules.
b)
Summary Introduction
To calculate: The average completion time, average job lateness and the average number of jobs for the FCFS
c)
Summary Introduction
To calculate: The average completion time, average job lateness and the average number of jobs for EDD schedule.
d)
Summary Introduction
To calculate: The average completion time, average job lateness and the average number of jobs for the SPT schedule.
e)
Summary Introduction
To calculate: The average completion time, average job lateness and the average number of jobs for the LPT schedule.
f)
Summary Introduction
To explain: The best decision rule based on average completion time.
g)
Summary Introduction
To explain: The best decision rule based on average lateness.
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1) Under “Costs of Quality”, costs associated with quality can be classified into four categories: appraisal, prevention, internal failures, and external failures. The costs of quality for Corley Motors Logistics is given in the table.
Cost Elements
Amount
Checking outbound boxes for errors
$31,000
Quality planning
$10,625
Downtime due to conveyor/computer problems
$342,125
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$21,000
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$33,000
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$25,925
Correction of typographical errors--pick tickets
$11,475
a) Classify the quality cost elements given in the table into the different quality cost categories (prevention, appraisal, internal failure, external failure).
b) Total the quality costs in each of the different quality cost categories (prevention, appraisal, internal failure, external failure).
c) Using a) and b), suggest which areas…
Note: In chapter 9, section 9.4 of the Stevenson text, the costs of quality are covered; chapter 9 Stevenson lecture power point slide 7 touches upon this topic; see lecture video, 3.55 mins to 4.54 mins.
2) The production process at Hansa Ceylon Coffee fills boxes with dark arabica coffee. The data for the fill weight (in ounces) of eight samples are presented below. A sample size of six was used. The firm’s operations analyst wants to construct X-bar and R-charts to monitor the filling process.
Sample
Sample Mean
Sample Range
1
15.80
0.42
2
16.10
0.38
3
16.02
0.08
4
15.95
0.15
5
16.12
0.42
6
16.18
0.23
7
15.87
0.36
8
16.20
0.40
a) Calculate the upper and lower control limits for the X-bar chart.
b) Calculate the upper and lower control limits for the R chart.
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Chapter 15 Solutions
PRIN.OF OPERATIONS MANAGEMENT-MYOMLAB
Ch. 15 - Prob. 1EDCh. 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. 9DQ
Ch. 15 - Prob. 10DQCh. 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. 11PCh. 15 - Prob. 12PCh. 15 - Prob. 13PCh. 15 - Prob. 14PCh. 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. 24PCh. 15 - Prob. 25PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - Daniels Barber Shop at Newark Airport is open 7...Ch. 15 - Given the following demand for waiters and...Ch. 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 - Why is seniority important in scheduling servers?Ch. 15 - Prob. 2.4VC
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