B A 5 3 4 O Consider a project involving the following activities and precedence relationship. The cost of each activity is listed. Duration (week) Activity Precedence Cost per week Most likely Activity Optimistic Pessimistic ($/week) (m) (b) A 5,000 2 3 5 3,000 8 6,000 6 9 2,000 2 4 4,000 3 7 D 7,000 1 2 4,000 5 . G 8,000 1 2 3 BE 6,000 6 8 K E,F,H 5,000 2 4 7 L J 3,000 3 6 A B D 1 4 E F 4 G D 2 3 4 2 1. Construct the project network 2. Find the expected duration and variance of each activity. 3. Find the critical path and the expected project completion time. the chance of having the project completed between 2 weeks earlier and 4 weeks later than the expected duration