OPERATIONS AND SUPPLY CHAIN MANAGEMENT
9th Edition
ISBN: 9781119448037
Author: Russell
Publisher: WILEY
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Textbook Question
Chapter 9, Problem 3P
Use the project activities that follow to determine the following:
- a. Construct a Gantt chart; indicate the project completion time and slack for each activity.
- b. Construct the CPM/PERT network, compute the length of each path in the network, and indicate the critical path.
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A project manager has compiled a list of major activities that will be required to install a computer information system in her firm. The list includes estimated completion times for activities and precedence relationships.Use Table B1 and Table B2.
Activity
ImmediatePredecessor
Estimated Times(weeks)
A
—
2-4-6
D
A
6-8-10
E
D
7-9-12
H
E
2-3-5
F
A
3-4-8
G
F
5-7-9
B
—
2-2-3
I
B
2-3-6
J
I
3-4-5
K
J
4-5-8
C
—
5-8-12
M
C
1-1-1
N
M
6-7-11
O
N
8-9-13
End
H, G, K, O
If the project is finished within 26 weeks of its start, the project manager will receive a bonus of $1,000; and if the project is finished within 27 weeks of its start, the bonus will be $500. Find the probability of each bonus. (Round Mean, Standard Deviation to 2 decimal places and Probability to 4 decimal places.)
Path
Mean
Std. Dev.
a-d-e-h
24.33 Numeric Response1. Edit Unavailable.24.33correct.
1.35 Numeric Response2. Edit Unavailable.1.35correct.
a-f-g
15.50 Numeric…
A project manager has compiled a list of major activities that will be required to install a computer information system in her firm. The list includes estimated completion times for activities and precedence relationships.Use Table B1 and Table B2.
Activity
ImmediatePredecessor
Estimated Times(weeks)
A
—
2-4-6
D
A
6-8-10
E
D
7-9-12
H
E
2-3-5
F
A
3-4-8
G
F
5-7-9
B
—
2-2-3
I
B
2-3-6
J
I
3-4-5
K
J
4-5-8
C
—
5-8-12
M
C
1-1-1
N
M
6-7-11
O
N
8-9-13
End
H, G, K, O
If the project is finished within 26 weeks of its start, the project manager will receive a bonus of $1,000; and if the project is finished within 27 weeks of its start, the bonus will be $500. Find the probability of each bonus. (Round Mean, Standard Deviation, z-value to 2 decimal places and Probability to 4 decimal places.)
Path
Mean
Std. Dev.
a-d-e-h
a-f-g
b-i-j-k
c-m-n-o
Probability ($1,000) ______________________________ Probability…
A project's activities must be completed in the sequence indicated below.
Activity
Immediately Preceding Activity
Duration in Weeks
A
-
3
B
-
20
C
-
15
D
-
10
E
-
5
F
A
4
G
D
3
H
D, E
10
I
F
3
J
B
10
K
G, H
7
L
B, I
5
The project ends with the intersection of activities: C, J, K and L
1- Use CPM to construct (Draw) the project Network and find the critical path.
2- How long is the project expected to take
Chapter 9 Solutions
OPERATIONS AND SUPPLY CHAIN MANAGEMENT
Ch. 9 - Why is CPM/PERT a popular and widely applied...Ch. 9 - What is the purpose of a CPM/PERT network?Ch. 9 - Why are dummy activities used in a CPM/PERT...Ch. 9 - What is the critical path, and what is its...Ch. 9 - What is slack, and how is it computed?Ch. 9 - How are the mean activity times and activity...Ch. 9 - How is total project variance determined in...Ch. 9 - What is the purpose of project crashing analysis?Ch. 9 - Describe the process of manually crashing a...Ch. 9 - Which method for determining activity time...
Ch. 9 - Explain how a Gantt chart differs from a CPM/PERT...Ch. 9 - Discuss the relationship of direct and indirect...Ch. 9 - Describe the limitations and disadvantages of...Ch. 9 - Describe the difference between activity-on-node...Ch. 9 - Identify and briefly describe the major elements...Ch. 9 - Select an everyday project you are familiar with...Ch. 9 - Prepare a WBS for a spaghetti with meatballs...Ch. 9 - Construct a Gantt chart for the project described...Ch. 9 - Construct a Gantt chart for the project described...Ch. 9 - Use the project activities that follow to...Ch. 9 - Construct a network from the information in the...Ch. 9 - For the network in Problem 9.4, determine the...Ch. 9 - Given the following network with activity times in...Ch. 9 - Given the following network with activity times in...Ch. 9 - A marketing firm is planning to conduct a survey...Ch. 9 - In one of the little-known battles of the Civil...Ch. 9 - A group of developers is building a new shopping...Ch. 9 - The management of a factory is going to erect a...Ch. 9 - Given the following network and probabilistic...Ch. 9 - The Farmers American Bank of Leesburg is planning...
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