solution

Given the following information, what is the probability that this will be completed in 20 weeks or more? Time Units = Weeks Immediate Predecessor Activity (IP) A a m b — 2 3 4 B — 9 una ? A 9 mm D 8 9 A,B C, D E 3 9 z 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.0 0.50000.5040 0.50800.5120 0.5160 0.51990.5239 0.5279 0.5319 0.5359 0.10.5398 0.5438 0.5478 0.5517 0.5557 0.5596 0.5636 0.5675 0.5714 0.5753 0.2 0.5793 0.5832 0.58710.5910 0.5948 0.59870.60260.6064 0.6103 0.6141 0.3 0.61790.6217 0.6255 0.6293 0.6331 0.6368 0.64060.6443 0.6480 0.6517 0.4 0.6554 0.6591 0.6628 0.66640.6700 0.6736 0.6772 0.6808 0.6844 0.6879 0.5 0.6915 0.6950 0.6985 0.7019 0.7054 0.70880.71230.7157 0.7190 0.7224 0.6 0.7257 0.7291 0.7324 0.7357 0.7389 0.7422 0.7454 0.7486 0.7517 0.7549 0.7 0.7580 0.7611 0.7642 0.7673 0.77040.77340.77640.7794 0.78230.7852 0.8 0.7881 0.7910 | 0.7939 0.7967 0.7995 0.8023 0.8051 0.8078 0.8106 0.8133 0.9 0.8159 0.8186 0.8212 0.8238 0.8264 0.8289 0.83150.8340 0.8365 0.8389 1.00.8413 0.8438 0.8461 0.8485 0.85080.8531 0.8554 0.8577 | 0.8599 0.8621