Problem # 7 [ 12.5 pts}. In the following table 277 college students are classied according to their class standing and also according to their favorite pizza topping: Anchovies Chicken Onions Hamburger Pineapple Total , (II) (E) Freshman 12 14 15 12 10 63 (F) Sophomore l 7 2 l 0 14 23 75 (5} Junior (J) 18 22 13 15 17' 85 Senior (R) 9 13 16 7 9 54 Total 56 7'0 44 48 59 277' If one of these students is selected at random, nd the following probabilities: a) The probability that the student likes Chicken or Hamburger topping given that the student is a junior or a senior.