Problem: The following project is to be scheduled using the expected times found using the approximation to the beta distribution. All duration estimates are in weeks:
Activity a m B Predecessors
A 2 5 8 -
B 4 10 22 A
C 1 4 16 B
D 4 6 8 A
E 4 6 11 A
F 1 2 6 E
G 3 4 17 D,E
H 1 2 3 C,F,G
Q1. Find the early start and late start schedule for each activity as well as its total and free slack.
Q2. What is the critical path duration? What is the variance for the critical path? What is the probability that the project will be completed in 24 weeks?
Q3. Using evidence from this specific project, explain if the estimate found in (B) is optimistic, and why, or why not?