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Mathematics 21 Online
OpenStudy (wes_is_here):

Reading Sports Swimming TOTAL Boys 2 20 8 30 Girls 4 7 9 20 TOTAL 6 27 17 50 ITEMBANK: Move to Top 0.070.200.260.270.450.470.670.74 P(Boy if favorite activity is swimming) P(Girl if favorite activity is sports) P(Girl if favorite activity is reading) P(Boy if favorite activity is sports) P(Favorite activity is swimming if a girl) P(Favorite activity is reading if a boy) P(Favorite activity is swimming if a boy) P(Favorite activity is reading if a girl)

OpenStudy (mathmale):

First one: favorite activity of a student chosen at random is swimming. What is the probability that this student is a boy? How many students chose swimming as their favorite activiity?

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