2. Suppose that we have the following sample regression equation: a=a+ea+a or y=gxi+h where y;=1'?: mi=X}-{ a} Prove that the OLE criterion results in the following results: Baa = D b} We can rewrite the sample regression equation in the following way: pi = g + e\" where 331 = 33231. Prove the following: Z=E+2$ and th-, dene the R\": e} For a multiple regression model with k: regression ooefeients, explain the dierenee between the lit2 and the Adjusted R2 (or R2). "Mimer is the adjusted R!2 a better measure of the goodness of t than the R2