PROJECT SCHEDULING WITH UNKNOWN ACTIVITY Question 2 To complete the wing assembly for an experimental aircraft Asiacraft Company has laid out the major steps and seven activities involved. These activities have been labeled A through G in the following table, which also shows their estimated completion times in weeks) and immediate predecessors. Activity a b Immediate predecessors A B D E F G 1 2 4 8 2 4 1 2 3 5 9 5 5 2 3 4 6 10 8 6 3 A B C.D B E a. Draw the precedence diagram b. Determine the critical path and the expected project length c. What is the probability that the project will finish in 17 weeks or less? d. What is the probability that the project will finish in 18 weeks or less? e. What is the probability that the project will finish in 20 weeks or less