Suppose that we add some duration estimates to each of the activities from Exercise 9.28. A portion of the revised table is shown here. Recreate the network diagram for this project and note how MS Project uses nodes to identify activity durations, start and finish dates, and predecessors. What is the critical path for this network diagram? How do we know?

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Activity Duration Predecessors A - Survey site 5 days B - Install sewer and storm drainage 9 days A C - Install gas and electric power lines 4 days A D-Excavate site for spec 2 days B, C house E-Pour foundation 2 days D