For the data from Problem 2 in this chapter, address the following questions, using the information provided

Question:

For the data from Problem 2 in this chapter, address the following questions, using the information provided in the accompanying SAS output.
a. State the regression model that incorporates the straight-line models for each group of countries.
b. Determine and plot the separate fitted straight lines, based on the fitted regression model given in part (a).
c. Test for parallelism of the two straight lines.
d. Test for coincidence of the two straight lines.
e. Compare your results in parts (b) through (d) to those obtained in Problem 2.