You need to develop a model to predict the assessed value of houses in Silver Spring, Maryland, based on the size of the house, whether it has a fireplace, the number of bedrooms, and the number of bathrooms. A sample of 30 houses is selected and the results are stored in SilverSpring. Develop the most appropriate multiple regression model to predict assessed value. Be sure to perform a thorough residual analysis. In addition, provide a detailed explanation of the results.