12.113 You have been asked to develop a model that will predict the cost with financial aid for students at highly ranked private colleges. The data file Private Colleges contains data collected by a national news service.

Variables are identified in the Chapter 12 appendix.

a. Specify a list of potential predictor variables with a short rationale for each variable.

b. Use multiple regression to determine the conditional effect of each of these potential predictor variables.

c. Eliminate those variables that do not have a significant conditional effect to obtain your final model.

d. Prepare a short discussion regarding the conditional effects of the predictor variables in your model, based on your analysis.