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Practice Problem: Chapter 3, Project Management
Problem 1:
The following represent activities in a major construction project. Draw the network to
represent this project.
Activity
Immediate Predecessor
A

B

C
A
D
B
E
B
F
C, E
G
D
H
F, G
1
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Given the following Time Chart and Network Diagram, find the Critical Path.
Activity
a
m
b
t
Variance
A
2
3
4
3
1/9
B
1
2
3
2
1/9
C
4
5
12
6
16/9
D
1
3
5
3
4/9
E
1
2
3
2
1/9
Problem 3:
What is the variance in completion time for the critical path found in Problem 2?
Problem 4:
A project has an expected completion time of 40 weeks and a standard deviation of 5
weeks. It is assumed that the project completion time is normally distributed.
(a)
What is the probability of finishing the project in 50 weeks or less?
(b) What is the probability of finishing the project in 38 weeks or less?
(c)
The due date for the project is set so that there is a 90% chance that the project will
be finished by this date.
What is the date?
2
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This note was uploaded on 04/24/2011 for the course MGT 4476 taught by Professor Marthabrowski during the Spring '10 term at Troy.
 Spring '10
 MARTHABROWSKI
 Management, Project Management

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