Question: PERT 3 An activity on a PERT network has these time estimates: optimistic = 2 , most likely = 3 , and pessimistic = 1

PERT 3
An activity on a PERT network has these time estimates: optimistic =2, most likely =3, and pessimistic =10. What is its expected activity time and variance?
4; 1.78
4; 10.67
5; 1.78
5; 10.67

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