Use the Values in the Table to Calculate Activity Durations

Essay

Use the values in the table to calculate activity durations and variances for the project.What is the likelihood of finishing this project within 47 days? $$\begin{array} { | l | l | l | l | l | } \hline \text { Activity } & \text { Predecessor } & \text { Optimistic } & \text { Likely } & \text { Pessimistic } \\\hline \text { A } & - & 5 & 8 & 11 \\\hline \text { B } & \text { A } & 15 & 20 & 25 \\\hline \text { D } & \text { A } & 7 & 9 & 12 \\\hline \text { D } & \text { A } & 12 & 16 & 20 \\\hline \text { F } & \text { B, D } & 8 & 11 & 15 \\\hline \text { G } & \text { C } & 13 & 17 & 22 \\\hline\end{array}$$