$\backslash$table$[[,2,2,3]]$

Draw the network diagram. Using the most likely time estimate as the completion times for each of the eight activities, what is the probability of completing this project $1$ week before the expected time of completion?

$0$

$0\mathrm{.}7500$

$0\mathrm{.}5000$

$0\mathrm{.}1367$

$0\mathrm{.}8633$