Suppose that the following estimates of activity times (in weeks) were provided for the network shown in Problem 6:
|
Activity
A
|
Optimistic
4.0
|
Most Probable
5.0
|
Pessimistic
6.0
|
|
B
|
2.5
|
3.0
|
3.5
|
|
C
|
6.0
|
7.0
|
8.0
|
|
D
|
5.0
|
5.5
|
9.0
|
|
E
|
5.0
|
7.0
|
9.0
|
|
F
|
2.0
|
3.0
|
4.0
|
|
G
|
8.0
|
10.0
|
12.0
|
|
H
|
6.0
|
7.0
|
14.0
|
What is the probability that the project will be completed
a. Within 21 weeks?
b. Within 22 weeks?
c. Within 25 weeks?
Text Book: An Introduction to Management Science: Quantitative Approaches to Decision. By David Anderson, Dennis Sweeney, Thomas Williams, Jeffrey Camm, James Cochran.