A project has the following data
|
activity
|
Immediate predecessor
|
Optimistic time
|
Most likely time
|
Pessimistic time
|
|
A
|
-
|
2
|
3
|
4
|
|
B
|
A
|
1
|
2
|
3
|
|
C
|
A
|
4
|
5
|
12
|
|
D
|
A
|
3
|
4
|
11
|
|
E
|
B
|
1
|
3
|
5
|
|
F
|
C
|
1
|
2
|
3
|
|
G
|
D
|
1
|
8
|
9
|
|
H
|
D,F
|
2
|
4
|
6
|
|
I
|
H
|
2
|
4
|
12
|
|
J
|
G
|
3
|
4
|
5
|
|
K
|
I,J
|
6
|
7
|
8
|
Required
Calculate the expected time and variance of each activity?
Draw a network diagram and identify critical path and project completion time?
What is the probability that the project will take more than 30 days to complete?