Question $22$

Development of a new deluxe version of a particular software product is being considered. The activities necessary for the completion of this problem are listed in the table below $($in weeks$).$ has also been provided. Complete the ES$,$ EF$,$ LS$,$ LF and slack times for each activity and answer the following question:

What is the probability that the project will be completed in $24$ weeks or less?

$\backslash$table$[[$Activity$,$Optimistic,Most Likely,Pessimistic,$\backslash$table$[[$Immediate$],[$Predecessor$]]],[$A$,3,4,5,-],[$B$,6,7,14,$A$],[$C$,5,6,13,$A$],[$D$,6,9,12,$B$],[$E$,4,8,12,$B$,$C$],[$F$,1,3,11,$B$,$D$,$E$]]$