Question: There are four activities on a project's critical path and they have standard deviations of 3,4,4, and 6 days. The standard deviation (in days) of

There are four activities on a project's critical path and they have standard deviations of 3,4,4, and 6 days. The standard deviation (in days) of the critical path is: A. 4.2. B. 8.2 C. 8.8 D. 9.5 E.13.7

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