(a) Compare your answer in Problem 20 to the answer you would have found if you had used an un-weighted, 0-1 scoring model. Assume that a score of 1 means does not qualify and a 2 or 3 means it does qualify?

(b) Next, revise the un-weighted model by deleting all categories that, as recommended, have a weight of less than 20 percent. Compare to your answer to (a) above and also Problem 20. Which method seems best?