Question: An activity on a PERT network has an optimistic time of 2 hours, a most likely time of 4 hours, and a pessimistic time of

An activity on a PERT network has an optimistic time of 2 hours, a most likely time of 4 hours, and a pessimistic time of 14 hours. Find its STANDARD DEVIATION. 2.5 hours 1 hour 0.5 hour 2 hours 1.5 hours

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