PLEASE SHOW IN EXCEL:

A. Determine the expected duration and variance for each activity.

B. Determine the ES, EF, LS, LF, and slack time for each activity. Also determine the total project completion time and critical path(s).

C. What is the probability that this job will finish in 38 days or less?

11-18 The Laurenster Corporation is getting into the construction business. A list of activities and their optimistic, most likely, and pessimistic completion times are given in the following table for the next construction project ACTIVITY DAYS IMMEDIATE PREDECESSORS a m b A 3 6 - B 2 4 6 - 1 2 3 D 6 07 7 8 00 E 2 4 6 B, D F 6 10 14 A, E G G 1 2 09 A, E H H 3 6 9 F 10 11 12 J 14 16 21 G K N 8 8 11 HI