Question: A, 2 B, 1 C, 1 E, 3 H, 5 J, 4 I, 5 Suppose the number against each activity represents the expected activity times

A, 2 B, 1 C, 1 E, 3 H, 5 J, 4 I, 5 Suppose the number against each activity represents the expected activity times rather than the actual activity times. The estimated activity standard deviations are A = 1, H = 2, I = 3, J = 2, E = 5. Estimate the probability that the project will finish within 21 weeks using the PERT method

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