$\backslash$table$[[$Task$,\backslash$table$[[$Immedlate$],[$predecessorls$]],$a$,$m$,$b$],[$A$,$None,$3,4,5],[$B$,$None,$2,4,6],[$C$,$A$,7,8,10],[$D$,$B$,4,7,9],[$E$,$C$,$D$,3,5,7],[$F$,$E$,1,2,4],[$G$,$C$,$F$,5,8,9],[$H$,$F$,3,6,8]]$

$3\mathrm{.}2\mathrm{.}1$ Determine the expected time and the variance of each project activity. Convert the expected time to the nearest whole number

$3\mathrm{.}2\mathrm{.}2$ Determine the critical path and completion time of the project.

$3\mathrm{.}2\mathrm{.}3$ Determine the project standard deviation.

$3\mathrm{.}2\mathrm{.}4$ What is the probability that the project will be completed two weeks before the project completion time?

$27$