Kirk is conducting PERT analysis for a project network. He finds that the activities A, B, C, D, E, F, and G are on the critical path. He also determines that the activities A, B, C, D, E, F, and G have standard deviations of 1, 4, 3, 1, 3, 2, and 3 hours, respectively. Find the STANDARD DEVIATION of the critical path A-B-C-D-E-F-G.

Group of answer choices

1.55839 hours

17 hours

2.42857 hours

4.12311 hours

7 hours