Question $3$

Table $7\mathrm{.}14$

You are responsible for managing a project with the following a ctivities $($times are given in weeks$),$

$\backslash$table$[[$Task$,$Predecessor,Optimistic,Most Likely,Pessimistic$],[$A$,.-,5,8,10],[$B$,$A$,7,10,12],[$C$,$B$,8,10,14],[$D$,.-,11,15,20],[$E$,$D$,12,14,18]]$

Using Table $7\mathrm{.}14,$ which activity has the largest standard deviation, and how lage istrat sanderd devition?

Activity: $A$;$0\mathrm{.}83$ weeks

Activity B; $1\mathrm{.}25$ weeks

Activity D; $1\mathrm{.}5$ weeks

Activity C; $1\mathrm{.}25$ weeks