What is the expected time for activity c?

A.   5.167

B.   3

C.   4.28

D.   6

I think D is the correct answer

What is the variance for activity A?

A.   3.33

B.   2.77

C.   5.31

D.   .674

Is C the correct answer

Assume there is one critical path of (A, B, C, E) what is the project variance?

A.   5.583

B.   6.313

C.   7.421

D.   8.667

??? not sure here


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