Refer to the Retirement Planning case. Review the problem statement and influence chart that were generated for this case in conjunction with the corresponding exercise in Chapter 2. (If this has not yet been done, develop the problem statement and influence chart as preliminary steps.) Design a spreadsheet to estimate the impact on Davidson’s retirement of increasing his annual retirement savings by 10 percent.

The above exercises refer to the cases in the back of this book. Read the case description carefully, sketch an appropriate spreadsheet on paper, and then build and test a prototype model. The purpose of the model is specified in the question.