(i) Complete the steps outlined in those slides and show that the slope (8) and intercept (Bo) estimates for the least squares regression line are given by: B = n 21(2i - z)(y - y) (x x)2 and Bo = B, where all notations have their standard meanings as used in the notes. (Hint: in the final step, to arrive at the desired expression of 3 as above, you may need to use the fact that ?_(x; x) = 0 and (Yi ) = 0, both of which follow quite easily from the definitions of and y.) i=1