Obtain a normal probability plot of the Popurban variable and a histogram of the the Deathrat variable in the demographic data set on countries (see Table B.5) used in SAS Example C12. Use proc univariate, as was done in the SAS Example C13 program. Use the normal option to add a reference line to the probabilty plot. Suppress all other output being produced from this step. (Note: You may use the SAS data set world created in Exercise 2.14 for this problem.)