The following precedence network displays the 3-Point estimates for each activity of a project. Determine:
a. The expected duration for each path and its variance.
b. The probability that the project will require more than 49 weeks.
c. The probability that the project can be completed in 46 weeks or less.

11-12-13 2 9-10-12 3 5-7-10 4 14-18-26 8-10-14 5-6-7 5 End 8-8-8 13-13-13 10.5-13-15.5 13 10-1214 7-10 12 10-11-12 10 12