Question: An activity on a PERT network has these time estimates: optimistic = 2 days, most likely = 5 days, and pessimistic = 10 days. What

An activity on a PERT network has these time

An activity on a PERT network has these time estimates: optimistic = 2 days, most likely = 5 days, and pessimistic = 10 days. What are the expected time and variance of this activity? O Expected time = 5.33 and variance = 1.78 = Expected time = 5.00 and variance = = 1.78 Expected time 17 and variance = 0.47 O Expected time = 3.56 and variance = 1.78 - =

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