A PERT problem is detailed in the table below. Times are given in weeks.

a. Draw a network diagram using the AOA approach and identify all paths of the project.
b. What is the expected completion time of the project?
c. What are the project variance and the project standard deviation?
d. Determine all possible paths. Which path is critical?
e. Determine the probability that the project is completed within 48 weeks, assuming that the path identified in (b) iscritical.

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Activity Preceding Optimisti