1. The estimated regression equation for a model involving two independent variables and 65 observations is:

yhat = 55.17+1.1X1-0.153X2

Other statistics produced for analysis include: SSR = 12370.8, SST = 35963.0, Sb1= 0.33, Sb2= 0.20. (16 points)

1. Interpret b1and b2in this estimated regression equation
2. Predict y when X1= 65 and X2= 70.
3. Compute R-square and Adjusted R-Square.
4. Comment on the goodness of fit of the model.
5. Compute MSR and MSE.
6. Compute F and use it to test whether the overall model is significant using a p-value ( = 0.05).
7. Perform a t test using the critical value approach for the significance of 1. Use a level of significance of 0.05.
8. Perform a t test using the critical value approach for the significance of 2. Use a level of significance of 0.05.