Q.4. For the following data (7 marks) Variance Task Predecessor Expected Time () A B D E F A B A.B E.C. E.D F E LG H. 1.J Time Estimated (days) to 1 4 7 2 8 14 3 6 9 4 10 16 3 6 9 10 13 16 5 11 17 17 23 1 4 7 2 5 8 3 3 3 H 1 J Calculate the expected time and variance for each activity? Draw a PERT diagram Compute the early start, early finish, late start, late finish, and show the critical path, what is the project expected completion time? What is the completion time that gives you a 95% chance of success