Discussion:
Q: Suppose the following estimates of activities (in weeks) for the construction of a swimming pool were provided, along with their immediate predecessors. What is the probability that the project will be completed within 21 weeks? Within 22 weeks?
Activity A B C D E F G H
Immediate Predecessor - - A A B D, E D, E C, F
Activity Optimistic Most Probable Pessimistic
A 4.0 5.0 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