$[$Q$]$: $11-23$ Tom Schrber, the director of personnel of Management Resources, Inc., is in the $[$Q$]$: $11-23$ Tom Schrber, the director of personnel of Management Resources, Inc., is in the

process of desigring a program that its cusfomers can use in the job$-$finding process. Some of the

actrities include preparing resumes, writing lewlers, making appointments to see prospective

employers, and researcting companies and industries. The intormation on these activties is shown in

the following takle:

a$.$ Construct a network for this problem.

b$.$ Determine the eapected time and variance for each activity.

c$.$ Determine ES$,$ EF$,$ LS$,$ LF$,$ and slack time for each activity.

d$.$ Determine the critical path$($s$)$ and project completion time.

e$.$ Determine the probability that the project will be finished in $70$ days or less.

f$.$ Determine the probabilty that the project will be finished in $80$ dirys or less.

g$.$ Determine the probability that the project will be finished in $90$ days or less.