8. Develop a Crystal Ball model for the garage band in Problem 11 in Chapter 9 with the following assumptions.

The expected crowd is normally distributed with a mean of 3,000 and a standard deviation of 400 (minimum of 0). The average expenditure on concessions is also normally distributed with mean $15, standard deviation $3, and minimum 0. Identify the mean profit, the minimum observed profit, maximum observed profit, and the probability of achieving a positive profit.

Develop and interpret a confidence interval for the mean profit for a 5,000-trial simulation.