Perssimistic 1 Predecessor Brain Break Optimistic Most likely duration 4 5 4 8 6 7 5 9 4 6 A D BE G 9 9 11 10 8 9 10 8 9 8 F 9 2 5 3 5 H 6 6 ta. Calculate the durations for each of the activities using the beta distribution (durations in weeks) 1b. Draw the network diagram using the weighted average and determine the earliest time the project would be completed Q. Determine the activities on the critical path & calculate the standard deviation for the activities on the critical path