Question: A project has seven activities - A, B, C, D, E, F, and G. They have mean activity times of 12, 15, 18, 9, 14,

A project has seven activities - A, B, C, D, E, F, and G. They have mean activity times of 12, 15, 18, 9, 14, 10, and 8 days respectively, and each of them have a standard deviation of 2 days. The critical path has been identified as B-E-F-G. What is the standard deviation of the project completion time?

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