Question: A small software development project has five major activities. The times are estimated and provided in the table below. Activity Immediate Predecessor a m b

A small software development project has five major activities. The times are estimated and provided in the table below.
Activity Immediate
Predecessor a m b
A --258
B --101010
C A 4710
D B 2514
E C 333
(a) What is the expected completion time for this project?
(b) What variance would be used in finding probabilities of finishing by a certain time?

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