II Engineering students obtained the following data during a lecture of Design of Experiments The process s inputs are and w whereas y is the output From previous knowledge on the process the following ARX model structure i proposed y k ay k 1 Bx2 k 1 yw k 2 k y k x k w k 0 3 6 0 1 0 3 1 4 4 0 2 0 5 2 3 8 0 1 0 1 3 4 8 0 5 0 8 4 5 4 0 2 0 1 5 4 3 0 2 0 3 a Define all required vectors and matrices to estimate a y y through least squares 20pts b Calculate e 10pts 6 2 8 0 6 0 5