Question: An activity on a PERT network has these time estimates: optimistic = 12, most likely = 10, and pessimistic = 5. Its expected time is

An activity on a PERT network has these time estimates: optimistic = 12, most likely = 10, and pessimistic = 5. Its expected time is O A. 9 OB. 27 OC. 4.5 O D. 9.5 O E. 52.833 The critical path for the network activities shown below is with duration Activity Duration Immediate Predecessors A 8 B 5 A 1 D 3 A N E 8 B,C,D O A. A-B-C-D-E; 25 B. A-D-E; 19 OC. C-E: 9 D. A-B-E: 21 E. B-C-D: 9

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