(all answers were generated using 1,000 trials and native excel functionality.) the management of brinkley corporation is interested in using simulation to estimate the profit per unit for a new product. the selling price for the product will be $45 per unit. probability distributions for the purchase cost, the labor cost, and the transportation cost are estimated as follows: procurement cost ($) probability labor cost ($) probability transportation cost ($) probability 10 0.25 20 0.10 3 0.75 11 0.45 22 0.25 5 0.25 12 0.30 24 0.35 25 0.30 (a) construct a simulation model to estimate the average profit per unit. what is a 95% confidence interval around this average? round your answers to two decimal places. lower bound: $ upper bound: $ (b) management believes that the project may not be sustainable if the profit per unit is less than $5. use simulation to estimate the probability that the profit per unit will be less than $5. what is a 95% confidence interval around this proportion? round your answers to one decimal of a percentage. lower bound: %