Anna is considering investing $150,000 by dividing it into three investments. But she is not sure how much to put in each one. The first investment is known to follow a uniform distribution with a rate of return that varies from -2% to 10%. The second investment follows a normal distribution with an average rate of return of 12% and a standard deviation of 6%. The third investment has a constant return of 6%.

(a)  Construct a computer model to simulate Anna's investments for a 20 year period. Assume that the balances are cumulative. Include as input parameters the amounts invested in each type of investment. Try your simulation model using $50,000 in each investment. The simulation should keep track of the combined balance.

(b)  Use data table to repeat the simulation designed in part (a) 300 times and record the results.