12.100 Use the data in the file Citydatr to estimate a regression equation that can be used to determine the marginal effect of the percent of commercial property on the market value per owner-occupied residence. Include the percent of owner-occupied residences, the percent of industrial property, the median number of rooms per residence, and the per capita income as additional predictor variables in your multiple regression equation. The variables are included on your data disk and described in the chapter appendix.

Indicate which of the variables are conditionally significant.

Your final equation should include only significant variables. Discuss and interpret your final regression model, including an indication of how you would select a community for your house.