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A small software development project at? Krishna? Dhir's firm has five major activities. The times are estimated and provided in the? table? below:

Activity Immediate Predecessors A M B

A - 2 5 8

B - 3 6 9

C A 4 7 10

D A 2 5 14

E B 3 3 3

??a) The expected completion time for this project is ____________

??b) The project variance value of completion time is ____________

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