Ch$.4$ Project Management Calculations for Exam $2($No Calculations on Exam $2$ from Ch$\mathrm{.}5$ Quality$)1.$Time estimate for an activity $\mathrm{.}2$ Variance for an Activity $\mathrm{.}3$ Normal Solution $($path$,$ time, $$)4.$All$-$Crash Solution $($path$,$ time, $$)5.$ Change in Costs over Change ni Days$6.$Minimum Cost Crash Solution for Xdays $[$for example Xis one day less than normal solution days andXis one day more than all crash solution$]$