Problem $3$

Estimate the mean and standard deviation of completion times for the project network below. Nodes

represent milestones, and arcs represent activities with the following distributions of completion

times:

Use Monte Carlo simulation to develop your estimates using $10,000$ times $(10,000$ replications$).$

$($HOW TO DO THIS IN EXCEL STEP BY STEP$)$

$($Do it in excel, please$)$