Q3) The activity details and their predecessors are given below use the PERT method to calculate the expected time (1 Mark) and construct the network diagram (1 Mark) to find the critical path of the activity (1 Mark) also indicate the project duration (1 Mark) with the standard deviation (1 Mark). Activity Predecessors the Optimistic Most likely Pessimistic expected time time (tm) time time (to) (tp) A 8 21 28 B -- 1 1 1 C A 9 5 01 35 D B 6 24 6 E A 28 19 40 F C,G 6 6. 24 G D 6 6 3 . B 13 8 16 E,F 7 15 0 000 8 J GH 9 22