Activity Path UN A B D E F G H 1-2 1-6 2-3 24 3-5 4-5 6-7 5-8 7-8 To 2 2 5 1 5 2 3 2 7 Duration TM 5 5 11 4 11 5 9 2 13 14 8 29 7 17 14 27 8 31 I 1- Construct the project network using PERT. 2- Find the expected time and standard deviation for each activity. 3- Find the critical path and expected project completion time. 4- What is the probability of completing the project on or before 29 weeks (using standard normal probabilities Table)