A Project Network Is Shown Below Now Assume That the Times Listed Are Only the Expected

Essay

A project network is shown below. Use a forward and a backward pass to determine the critical path, and then fill out the table below. $$\begin{array} { | c | c | c | c | c | c | c | c | c | c } \hline \text { Activity } & \begin{array} { c } \text { Immediate } \\\text { Predecessors }\end{array} & \begin{array} { c } \text { Activity } \\\text { Time (weeks)}\end{array} & E S & L S & E F & L F & \text { Sack } & \begin{array} { c } \text { Critical } \\\text { Path? }\end{array} \\\hline \mathrm { A } & & & & & & & & \\\hline \mathrm { B } & & & & & & & & \\\hline \mathrm { C } & & & & & & & & \\\hline \mathrm { D } & & & & & & & & \\\hline \mathrm { E } & & & & & & & & \\\hline \mathrm { F } & & & & & & & & \\\hline \mathrm { G } & & & & & & & & \\\hline \mathrm { H } & & & & & & & & \\\hline\end{array}$$ Now assume that the times listed are only the expected times instead of being fixed times. Is the probability of being finished in fewer than 25 weeks more or less than 50%?