1. Sharon tossed three coins. What is the probability that she tossed exactly two tails, given that she tossed at least 1 tail? A. B. C. D. Hint 2. Raphael is conducting a survey of families with 2 children. If a family is selected at random, what is the probability that the family will have exactly 2 girls if the second child is a girl? A. B. C. 1 D. Hint 3. In Mr. Jonas' homeroom, 70% of the students have brown hair, 25% have brown eyes, and 5% have both brown hair and brown eyes. A student is excused early to go to a doctor's appointment. If the student has brown hair, what is the probability that the student also has brown eyes? A. B. C. D. Hint 4. A bag contains 5 blue marbles and 8 brown marbles. One marble is randomly drawn and discarded. Then a second marble is drawn. Find the probability that the second marble is blue given that the first marble drawn was brown. A. B. C. D. Hint 5. In Mrs. Lerman's classroom, 75% of the students wear watches, 30% wear eyeglasses, and 20% wear both watches and eyeglasses. A student is called to the board to explain a concept. If the student wears a watch, what is the probability that the student also wears eyeglasses? A. B. C. D. Hint