Question: An activity on a PERT network has these time estimates: optimistic - 2, most likely - unknown, and pessimistic = unknown. If variance - 2.25

An activity on a PERT network has these time estimates: optimistic - 2, most likely - unknown, and pessimistic = unknown. If variance - 2.25 and expected time = 7.5, what are the most likely and pessimistic estimates? 8,11 5,12 5, 11 6,9 8,12

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