Question: Suppose we are using the CPM with three time estimates ( PERT ) to schedule a project. What is the variance of the length of

Suppose we are using the CPM with three time estimates (PERT) to schedule a project. What is the variance of the length of the critical path if the standard deviation is 2.4?

A. 5.76

B. 2.34

C. 2.96

D. 3.19

E. 4.46

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