Consider the regression model Y subscript i equals beta subscript 0 plus beta subscript 1 X subscript 1 i end subscript plus beta subscript 2 X subscript 2 i end subscript plus u subscript i. If you wanted to use a t-statistic to test the hypothesis H subscript 0 colon space beta subscript 1 plus beta subscript 2 equals 1, how would you transform this regression