Q3 (7 points) A model to describe the two treatment comparison data is Y\".- : p. + 1-; l 653', 6,;3- IJE'INGLOJJ, i: 1, 2, j : 1, . . . ,ni, and 23:1 Ti : c, where c is a constant. Use the method of Lagrange multipliers to derive the formula of the least squares estimates of parameters ,u and 11's. Recall that the least squares estimates minimize the sum of squares of residuals (errors) with the constraint 2 22.21 7-7. : C