49. 0.7
51. 15
53. 4750
55. The probability of winning one prize is 225. The probability of winning both is 91550.
57.
14
14
12
59.
79148
3340
0
1
119120
61. The probability that a non-Hispanic white American has no lactose intolerance is 45. The probability for the second group is 14.
63.
110
110
65. 90; 135; 10; 765
67. Three of one gender and one of the other is more likely.
69.
25
89180
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