QUESTION $4$

Jack's Contractors Inc wants to expand a major shopping complex to create more

rooms for tenets. A number of activities must be identified for this project to assist the

construction team in organising and scheduling the project. These activities are listed

in the below table. Actual activity times are uncertain, so three $(3)$ time estimates

have been formulated.

Activity Table in Weeks

a$.$ Calculate the expected activity times for the activities, as well as their standard

deviations.

$(6$ marks$)$

b$.$ i$.$ Draw a network diagram $($AON$)$ of the project activities with activity

completion times, ES$,$ EF$,$ LS$,$ and LF times within the activity nodes.

$(6$ marks$)$

ii$.$ What is the expected completion time of the entire project?

$(1$ mark$)$

c$.$ Identify the critical path. Show evidence of working.

$(2$ marks$)$