3 9 Act. a m b Mean Variance St. Dev. 6.5 12.5 A 1 3 5 3.00 0.44 0.66 7 125 12.5 15.5 B 5 6 7 6.00 0. 11 0.33 A E C 1 3 11 4.00 2.78 1.67 5.5 D 2 3 7 3.50 0.69 0.83 3 7 12.5 12.5 15.5 E 4 5 9 5.50 0. 69 0.83 F 1 2 3 2.00 0. 11 3 0.33 6.5 6.5 8.5 D G 2 3 4 3.00 F 0. 11 0.33 3.5 3.5 --4 10.5 12.5There is a 95% probability that the project will be completed in less than: O 18.81 Weeks O 15.5 Weeks 12.19 Weeks 20.18 Weeks