In a PERT network, the activity durations are given as to (optimistic), tp (pessimistic) and tm (most likely time). What is the variance of is activity ?

In a PERT network, the activity durations are given as to (optimistic)

1.	In a PERT network, the activity durations are given as to (optimistic), tp (pessimistic) and tm (most likely time). What is the variance of is activity ?
A.	[A].
B.	[B].
C.	[C].
D.	None of the above
Answer» D. None of the above

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In a PERT network, the activity durations are given as to (optimistic), tp (pessimistic) and tm (most likely time). What is the variance of is activity ?

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