Predecessors ES EF No. weeks Collect requirements 1 -- 2 Analyze Process 3 1 3 Analyze Data 3 4 Design Process 7 2 5 Design Data 2 6. Design Screen 1 3, 4 7 Design Reports 4, 5 8 Program 4 6, 7 9 Test...

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Extracted text: Predecessors ES EF No. weeks Collect requirements 1 -- 2 Analyze Process 3 1 3 Analyze Data 3 4 Design Process 7 2 5 Design Data 2 6. Design Screen 1 3, 4 7 Design Reports 4, 5 8 Program 4 6, 7 9 Test and Document 8 7 10 Install 8, 9 * EL=Early Start, EF-Early Finish, LS=Late Start, LF=Late Finish a. Draw a Network diagram for the activities. b. Calculate Early Start, Early Finish, Late Start and Late Finish for all activities. [Show the calculation in detail] c. Calculate the earliest expected completion time. d. Show the critical path. e. What would happen if activity 6 were revised to take 6 weeks instead of 1 weeks? f. Construct a Gantt chart for the project defined in the Problem. [This Gantt chart has a July 28, 2020 start date.]