Consider the Following PERT/CPM Network with Estimated Times in Weeks

Essay

Consider the following PERT/CPM network with estimated times in weeks.The project is scheduled to begin on May 1.
The three-time estimate approach was used to calculate the expected times and the following table gives the variance for each activity:
​
$$\begin{array} { c c | c c } \text { Activity } & \text { Variance } & \text { Activity } & \text { Variance } \\\hline \text { A } & 1.1 & \mathrm { E } & 0.3 \\\text { B } & 0.5 & \mathrm {~F} & 0.6 \\\text { C } & 1.2 & \mathrm { G } & 0.6 \\\text { D } & 0.8 & \mathrm { H } & 1.0\end{array}$$
a.Give the expected project completion date and the critical path.
b.By what date are you 99% sure the project will be completed?