What is the probability that a randomly selected voter was a

What is the probability that a randomly selected voter was a non-White male?

What is the probability that a randomly selected White female voted for Hillary Clinton?

Given the data below, answer the following questions:

What is the probability that a randomly selected voter voted for Barack Obama?

What is the probability that a randomly selected voter who voted for Hillary Clinton was a White female?

South Carolina Exit Poll - 2008 Democratic Primary Obama 486 550 1638 2736 5410 Kucinich White Male White Female Non-White Male Non-White Female Clinton 504 1050 399 756 2709 Edwards 810 900 63 108 1881 1800 2500 2100 3600 10000 0 Total

Solution

the probability that a randomly selected voter was a non-White male = 2100/10000 = 0.21

the probability that a randomly selected White female voted for Hillary Clinton = 1050/10000 = 0.105

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the probability that a randomly selected voter voted for Barack Obama = 27%(18%)+(22%)25%+21%(78%)+36%(76%)

= 0.0486+0.0550+0.1638+0.2736

= 0.5410

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the probability that a randomly selected voter who voted for Hillary Clinton was a White female

= 25%(42%)

= 0.105