1. Refer to Question 1 in Part A. The data are provided in the file M13_HomePrice_Regression_Q1.xIsx. Import the data into R commander and complete the following questions and tasks. (a) Could we use a straight line to model the relationship between size and price of the custom homes? Use a proper graphical method to justify your answer. (3 marks) (b) How does the price of custom homes change when the size increases? Would the slope be positive or negative? (2 marks) (c) Obtain the least-squares regression equation using R commander. First paste the computer output into the space below and then compare the answer obtained by hand in Question 1 part (a)