A project being analyzed by PERT has $45$ activities, $25$ of which are on the critical path. If the estimated time along the critical path is $400$ days with a project variance of $120,$ what is the probability that the project will be completed in $420$ days or less?

Selected Answer:

$0\mathrm{.}9660$

Answers:

$0\mathrm{.}9660$

$0\mathrm{.}9770$