Question: An activity in a network diagram has an optimistic time estimate of 7 days, a most likely time estimate of 11 days, and a pessimistic

An activity in a network diagram has an optimistic time estimate of 7 days, a most likely time estimate of 11 days, and a pessimistic time estimate of 19 days. Its variance is Select one: a. 24 O b. 12 c. 4 d. 6 e. 2

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