10.8. The following activities are required for completing a project: Activity Duration, Days Activity Immediate Predecessor Optimistic Most Likely Pessimistic 15 B E,F 3262SMM-4 ||AACDRGN ABCDEFGHI 6 2 5 14 6 12 30 5 8 5 11 17 3 6 15 3 9 27 1 4 7 1 19 1 28 1 H,I

a. Draw a network diagram of this project showing the activities and their ex- pected duration times.

b. What is the critical path and the expected completion time of the project?

c. What is the probability of completing the project in 41 days or less?