(b) Consider a path A-C-H. Find the probability that the completion time of the path A-C-H will be 21 weeks or more.

Problem 4 - PERT: (5 points) Consider the same project from Problem 1 (i.e., the network diagram should look identical). The network diagram above is based on the most likely duration time for each activity. The table below now provides additional information regarding the optimistic and pessimistic duration times. (a) Determine the expected project completion time and the variance of the critical path using Most Likely time as duration. (Hint: Compare the most likely time for each activity to the duration in Problem 3.2 points)