Question: 13 An activity on a PERT network has these time estimates: optimistic = 2, most likely = 3, and pessimistic = 8. Its expected time

13 An activity on a PERT network has these time estimates: optimistic = 2, most likely = 3, and pessimistic = 8. Its expected time and variance (if it is a critical activity) are (2 Points) O 3.67:1 O 3.67: 6 433; 1 4,33; 6

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