Operations and Supply Chain Management
14th Edition
ISBN: 9780078024023
Author: F. Robert Jacobs
Publisher: MCG
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Chapter 23, Problem 16DQ
Summary Introduction
To explain: The common complaints of operations persons on the accounting procedure and the way these procedures can induce poor decisions for the total company.
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The Carbondale Hospital is considering the purchase of a new ambulance. The decision will rest partly on the anticipated mileage to be driven next year. The miles driven during the past 5 years are as follows:
Year
Mileage
1
3,000
2
3
4
4,000
3,450
3,850
5
3,800
a) Using a 2-year moving average, the forecast for year 6 =
miles (round your response to the nearest whole number).
b) If a 2-year moving average is used to make the forecast, the MAD based on this = miles (round your response to one decimal place). (Hint: You will have only 3 years of matched data.)
c) The forecast for year 6 using a weighted 2-year moving average with weights of 0.40 and 0.60 (the weight of 0.60 is for the most recent period) = ☐ miles (round your response to the nearest whole number).
miles (round your response to one decimal place). (Hint: You will have only 3 years of
The MAD for the forecast developed using a weighted 2-year moving average with weights of 0.40 and 0.60 =
matched data.)
d) Using…
Task time estimates for the modification of an assembly line at Jim Goodale's Carbondale, Illinois, factory
are as follows:
B
D
G
Time
Activity
(in hours) Immediate Predecessor(s)
A
5.0
B
7.5
C
5.0
A
DEFC
8.0
B, C
4.5
Figure 2
A
B, C
7.7
D
G
5.0
E, F
This exercise contains only part a.
a) The correct precedence diagram for the project is shown in
目
F
B
Figure 3
A
E
B
E
☑
D
F
Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time
and the critical path should also be determined. Here are the activity times:
Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s)
A
6
E
3
B
B
8
F
6
B
C
3
A
G
11
C, E
D
1
A
H
7
D, F
Dave's earliest start (ES) and earliest finish (EF) are:
Activity
ES
.EF
A
0
6
B
0
8
C
3
9
D
6
E
F
8
G
22
H
21
Dave's latest start (LS) and latest finish (LF) are:
Activity
LS
LF
H
15
G
11
F
9
Chapter 23 Solutions
Operations and Supply Chain Management
Ch. 23 - Prob. 1DQCh. 23 - Prob. 2DQCh. 23 - Prob. 3DQCh. 23 - Individually or in a small group, examine your own...Ch. 23 - Prob. 5DQCh. 23 - Prob. 6DQCh. 23 - Prob. 7DQCh. 23 - Prob. 8DQCh. 23 - Prob. 9DQCh. 23 - Prob. 10DQ
Ch. 23 - Prob. 11DQCh. 23 - Prob. 12DQCh. 23 - Prob. 13DQCh. 23 - Prob. 14DQCh. 23 - Prob. 15DQCh. 23 - Prob. 16DQCh. 23 - Prob. 17DQCh. 23 - Prob. 18DQCh. 23 - Prob. 1OQCh. 23 - Prob. 2OQCh. 23 - Prob. 3OQCh. 23 - Prob. 4OQCh. 23 - Prob. 5OQCh. 23 - Prob. 6OQCh. 23 - Prob. 7OQCh. 23 - Prob. 8OQCh. 23 - Prob. 9OQCh. 23 - Prob. 10OQCh. 23 - Prob. 11OQCh. 23 - Prob. 12OQCh. 23 - Prob. 13OQCh. 23 - Prob. 14OQCh. 23 - Prob. 15OQCh. 23 - Prob. 16OQCh. 23 - Prob. 17OQCh. 23 - Prob. 18OQCh. 23 - Prob. 1PECh. 23 - Prob. 2PECh. 23 - Prob. 3PECh. 23 - Prob. 4PECh. 23 - Prob. 5PECh. 23 - Prob. 6PECh. 23 - Prob. 7PECh. 23 - Prob. 8PECh. 23 - Prob. 9PECh. 23 - Prob. 10PE
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