Use the following data to create the 3x4 matrix A. Create a row vector COL_TOT_A consisting of the column totals for the columns of the matrix A. Create a column vector ROW_TOT_A consisting of the row totals for the rows of the matrix A. Re-direct the output to a pdf document. Print the matrix A, the row vector COL_TOT_A, and the column vector ROW_TOT_A to the PDF document. The PDF document should also contain a descriptive title at the 88 4 Matrix Manipulations in SAS/IML top of the document and descriptive labels (rather than the defaults) centered above each matrix and vector.
