Question on statistics and probability

Consider the data and print statements, DATA PROB3; DO GROUP = 'A' , "B' , "C' , "D' ; DO I=1 TO 3; X= (GROUP=' A' ) + 5* (GROUP EQ 'D' ) ; Y=ROUND (10 . 01+2*X) ; Z=X-Y+5; OUTPUT ; END; END ; DROP I; RUN ; PROC PRINT DATA=PROB3; RUN ; a. Provide the SAS output of the above print statement. b. In the above data statement replace X,Y, by: X= (GROUP=' A' ) + 5* (GROUP EQ 'D' ) + RANNOR(7) ; Y=ROUND (10 . 01+2*X) +RANNOR (99) ; Write down the SAS code to perform the two sample t-test for Ho : UD(x) = uc(x) and Ho : HD(y) = uc(y) using WHERE