Question $2$:

$[15]$

The following table gives the baseline cost and time estimates $($BCE and BTE$),$ the cost and time estimates to correct for failure, and the likelihood of failure for each work package in a riverbank dam project.

$\backslash$table$[[\backslash$table$[[$WBS$],[$Element$]],$BCE,$\backslash$table$[[$BTE$],[($wk$)]],\backslash$table$[[$Corrective$],[($Cost$)]],\backslash$table$[[$Corrective$],[($Time$)]],$Likelihood$],[$M$,$R $25,000,10,$R $5,000,3,0\mathrm{.}25],[$N$,$R $18,000,7,$R $4,000,2,0\mathrm{.}2],[$O$,$R $40,000,6,$R $10,000,3,0\mathrm{.}3],[$P$,$R $22,000,8,$R $6,000,2,0\mathrm{.}15],[$Q$,$R $17,000,4,$R $3,000,1,0\mathrm{.}1],[$R$,$R $12,000,5,$R $4,000,2,0\mathrm{.}2],[$S$,$R $20,000,6,$R $5,000,2,0\mathrm{.}3]]$

$2\mathrm{.}1.$ Determine the risk time and risk cost for all the WBS elements of the project.

$2\mathrm{.}2.$ Determine the critical path and the duration of the project.

$2\mathrm{.}3.$ Calculate the Total Expected Cost $($EC$)$ and Total Expected Time $($ET$).$