The data set (EX PER) created by running the following program contains the variables ID, GROUP, and DOSE. Create two new variables as follows: One is a 2-byte character variable created from the...

The data set (EX PER) created by running the following program contains the variables ID, GROUP, and DOSE. Create two new variables as follows: One is a 2-byte character variable created from the second and third bytes of ID. The other is a variable created by concatenating GROUP and DOSE. T11isvariable should be 6 bytes long with a '-' between the GROUP and DOSE values, and it should not contain any embedded blanks. Call the two variables SUB_ID and G RP_DOSE, respectively: