I'm not sure about the matrix of e. Please provide detailed explanation for the solution.

In a multiple linear regression model Y = Bo + Bit1 + B2x2 + e with e ~ N(0, 02), the design matrix X, response vector Y and (X X)-1 are given below. 1 01 1 0 2 103 1 0 4 0.65 -0.20 -0.15 105 X = Y = (X X) -1 = -0.20 0.40 0.00 1 1 1 -0.15 0.00 0.05 1 1 2 1 1 3 1 14 1 1 5 (a) (2 points) Please calculate the ordinary least squares estimates of B = (30, B1, B2) T