Use These Activity Durations (That Have Been Estimated at 90%)and

Use these activity durations (that have been estimated at 90%)and precedence requirements to create two project schedules - a traditional schedule based on early start times and a critical chain schedule with buffers. $$\begin{array} { | l | l | l | } \hline \text { Activity } & \text { Time } & \text { Predecessor } \\\hline \mathrm { A } & 8 & \\\hline \mathrm { B } & 15 & \\\hline \mathrm { C } & 19 & \mathrm {~B} \\\hline \mathrm { D } & 12 & \mathrm { C } \\\hline \mathrm { E } & 3 & \mathrm { C } \\\hline \mathrm { F } & 16 & \mathrm {~A} \\\hline \mathrm { G } & 12 & \mathbb { F } \\\hline \mathrm { H } & 16 & \mathbb { E } \\\hline \mathbb { R } & 7 & \mathrm { D } \\\hline \mathrm { J } & 16 & \mathrm { G } , \mathrm { H } \\\hline \mathrm { K } & 12 & \mathbb { R } \\\hline \mathrm { L } & 8 & \mathrm {~T} , \mathrm {~K} \\\hline\end{array}$$