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(All answers were generated using 1,000 trials and native Excel functionality.) cost, the labor cost, and the transportation cost are estimated as follows: (a) Develop a what-if spreadsheet model computing profit for this product in the base-case, worst-case, and best-case scenarios. If your answer is negative, use minus sign. Best-case profit $ Worst-case profit \$ Base-case profit $ (b) 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: $ interval around this proportion? Round your answers to one decimal of a percentage. Lower Bound: % Upper Bound: %