Question 444217
Based on a survey at school, it was found that 75% of the boys and 65% of the girls like to watch hockey games. There are an equal number of boys and girls at the school. If someone does NOT like to watch hockey games, what is the approximate probability that the person is a boy? 
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P(boy | doesn't like) = P(boy AND doesn't like)/P(doesn't like)
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P(doesn't like) = (0.25+0.35)/2.00 = 0.30
= 0.25/0.30
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= 5/6
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Cheers,
Stan H.