Q1 The estimates for optimistic, most probable and pessimistic completion times for a project having 13 activities are given in the Table Q1 (Durations are given in months). Most Probable Pessimistic Activity Predecessor/s A Optimistic 12 14 16 B 8 12 10 7 6 8 D A 12 13 14 E 8 9 9 A F 7 8 8 G 11 13 14 H B.F 9 10 11 I 14 14 16 9 11 12 J K B,F GI E,H E,H DL 8 10 11 L 9 9 10 M 10 11 12 Table Q1 Draw the network. Calculate all expected activity times and variances. Tii. Determine the critical path and the critical time for project completion. What is the probability that the project can be completed within the critical time? V. Calculate the probability that the project will be completed in 46 months