The following table represents the set of activities required to complete a project, along with their time estimates for PERT calculations.
a. Using the data, calculate the expected time and variance for each activity.
Job NumberPredecessor Job(s)ambETvariance
A---357
BA345
CA4512
DB135
EB, C3411
FD,E246
b. Sketch the network diagram for the project.
c. Indicate the critical path. (You can do this by inspecting the paths - you do not have to calculate ES, EF, LS, LF). What is the expected completion time for the project?
d. What is the probability that the project will take more than 22 days to complete?