Construct a simulation model to estimate the average profit per unit. What is a $95\%$ confidence interval around this average?

THE LOWER BOUND $ is$?$

$($All answers were generated using $1,000$ trials and native Excel functionality.$)$ estimated as follows:

$\backslash$table$[[\backslash$table$[[$Procurement$],[$Cost $($$$)]],$Probability,Cost $($$$),$Probability,$\backslash$table$[[$Transportation$],[$Cost $($$$)]],$Probability$],[10,0\mathrm{.}25,20,0\mathrm{.}10,3,0\mathrm{.}75],[11,0\mathrm{.}45,22,0\mathrm{.}25,5,0\mathrm{.}25],[12,0\mathrm{.}30,24,0\mathrm{.}35,,],[,,25,0\mathrm{.}30,,]]$

$$6\mathrm{.}93$

$$5\mathrm{.}57$

$$3\mathrm{.}17$