Question: 13. A PERT network for a project is shown at the top of page 664. a. Find the expected duration of each activity. b. Find

13. A PERT network for a project is shown at the top of page 664.

a. Find the expected duration of each activity.

b. Find the expected duration of the critical path.

c. Find the critical path.

d. Find the slack at each node.

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