Applying the Concepts
49. 0.7
51. $\frac{1}{5}$
53. $\frac{47}{50}$
55. The probability of winning one prize is $\frac{2}{25}}.$ The probability of winning both is $\frac{9}{1550}}.$

$\frac{1}{4}$
$\frac{1}{4}$
$\frac{1}{2}$

$\frac{79}{148}$
$\frac{33}{40}$
0
1
$\frac{119}{120}$
61. The probability that a nonHispanic white American has no lactose intolerance is $\frac{4}{5}}.$ The probability for the second group is $\frac{1}{4}}.$

$\frac{1}{10}}\text{$
$\frac{1}{10}}\text{$
65. 90; 135; 10; 765
67. Three of one gender and one of the other is more likely.

$\frac{2}{5}}\text{$
$\frac{89}{180}$
Get College Algebra, 4th Edition now with O’Reilly online learning.
O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.