Critical path is B,C,E,G

Assuming that activity E has taken 8 weeks past its anticipated duration to complete. What happens to the projects schedule, and/or duration and will there be a new critical path?

Activity Optimistic Expected time-a completion time-m Pessimistic Expected time-b time= (a+4*m+ b)/6 Variance, (sigma) 2= (b-a/6)^2 1 4 7 4.00 1.00 B 2 6 10 6.00 1.78 3 9 4.00 1.00 6 13 14 12.00 1.78 E 4 6 14 7.00 2.78 F 6 8 16 9.00 2.78 G 2 5 8 5.00 1.00