A sample of 30 houses recently listed for sale in Silver Spring, Maryland, was selected with the objective of developing a model to predict the taxes (in $) based on the assessed value of houses (in $thousands) and the age of the houses (in years) (stored in SilverSpring):

1. State the multiple regression equation.
2. Interpret the meaning of the slopes in this equation.
3. Predict the mean taxes for a house that has an assessed value of $400,000 and
4. is 50 years old.
5. Perform a residual analysis on the results and determine whether the regression
6. assumptions are valid.
7. Determine whether there is a significant relationship between taxes and the two
8. independent variables (assessed value and age) at the 0.05 level of significance.
9. Determine the p-value in (e) and interpret its meaning.
10. Interpret the meaning of the coefficient of multiple determination in this
11. problem.