data fw06p09; title 'CHAPTER 6, PROBLEM 9, INSECTICIDES';
input INSECT $  DEAD;
cards;
 A         85
 B         90
 C         93
 D         98
 A         82
 B         92
 C         94
 D         98
 A         83
 B         90
 C         96
 D        100
 A         88
 B         91
 C         95
 D         97
 A         89
 B         93
 C         96
 D         97
 A         92
 B         81
 C         94
 D         99