A professor wanted to investigate whether eating an orange every day (Variable 1: yes/no) for a semester affected the students' chances of catching a cold (Variable 2: yes/no) during that same time period. Of the 32 students who ate an orange every day: 10 caught a cold, and 22 did not catch a cold. Of the 32 students who did not eat an orange every day: 6 caught a cold, and 26 did not catch a cold. v