7. In a recent independent study, it was found that 63% of all students at M11 University read Times magazine, 51% read U.S. News and 1World Report, and 24% read both magazines. If a student at Mill University is randome selected, what is the probability that the student reads either magazine? 3. A survey found that 74% of the families in Morganville Lake have either a pet dog or pet cat in their home. Furthermore, 50% have a pet dog and 38% have a pet cat in their home. If a family in Morganville is randomly selected, what is the probability that the family has both a pet cat and a pet dog at home. 9. 'Which of the following sets of variables is most liker to have a negative association? A. the number of bedrooms and the number of bathrooms in a house B. the number of rooms in a house and the time it takes to vacuum the house C. the age of a house and the cleanliness of the carpets inside D. the size of a house and its selling price