Question: An activity on a PERT network has an optimistic time of 4 hours, a most likely time of 5 hours, and a pessimistic time of

An activity on a PERT network has an optimistic time of 4 hours, a most likely time of 5 hours, and a pessimistic time of 31 hours. Find its VARIANCE. Group of answer choices 20.25 hour2 16 hour2 12.2

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