Question $26(4$ points$)$

One project has $45$ activities, $19$ of which are on the critical path. The estimated average time for the crtical path is $120$ days. The standard deviation along the critical path is $8.$ Please choose the correct answer by using PERT analysis. Please help the project manager to find out the proper due date so that the project eal be completed with a probability of $90\%.$

$145\mathrm{.}72$

$130\mathrm{.}25$

$120$

Page $260+32$

$138\mathrm{.}64$