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Unformatted text preview: 32 TOTAL 162 144 151 457 To solve this exercise it helps to first get the row totals and column totals. a. If a medal is randomly selected from the top eight countries, what is the probability that it is gold? P( Gold ) = (162/457) b. If a medal is randomly selected from the top eight countries, what is the probability that it was won by China? P( China) = (63/457) c. If a medal is randomly selected from the top eight countries, what is the probability that it is gold and was won by China? This probability is read off the table: P( Gold and China ) = (32/457) d. If a medal is randomly selected from the top eight countries, what is the probability that it is gold or was won by China? P(Gold OR China) = P(Gold) + P(China) P(Gold AND China) = (162/457)+(63/457)(32/457) There is another way to do this exercise and I will let you discover it on your own. e. If a bronze medal is randomly selected from the top eight countries, what is the probability that it was won by Japan? P( Japan GIVEN Bronze )= (12/151) We are only looking at the bronze metals which number 151 and now what proportion of the bronze was won by Japan, 12 is what proportion of 151?...
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This note was uploaded on 05/17/2010 for the course MATH 246 taught by Professor Applebaugh during the Spring '10 term at University of Toronto Toronto.
 Spring '10
 Applebaugh
 Math, Statistics

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