Use the optimistic and pessimistic times $($together with activity times$)$ to determine expected completion time limits

a$.$ Draw PERT Chart with earliest and latest start and finish times$/$activity$.$ Fill in the slack time in the table for each activity. Show the slack time for each path for all paths and show Critical Path $($CPM$)$ and CPM time.

b$.$ What is the expected time for $68,95$ and $99$ percent Confidence Interval $($CI$)$ for the project?

c$.$ ID $9=97\mathrm{.}5\%),$ Confidence Interval for the project