Each person in a group of students was identified by year and asked when he or she preferred taking classes: in the morning, afternoon, or evening. The results are shown in the contingency table. Find the probability that the student preferred afternoon classes given he or she is a junior. Round to the nearest thousandth. Be sure to show and explain your work. (when do your prefer to do your work?)
freshmen morning: 2 afteroon: 8 evening: 9
sophmore morning: 9 afternoon: 9 evening: 15
juniors morning: 5 afternoon: 8 evening: 16
Seniors morning: 10 afternoon: 8 evening: 15