document.write( "Question 1116469: Blue Nile University recently conducted a survey of undergraduate students in order to
\n" ); document.write( "gather information about the usage of the library. The population for this study included
\n" ); document.write( "all 4000 undergraduate students enrolled in the university. The library officers are
\n" ); document.write( "interested in increasing usage, particularly among females (F) and seniors (S) at the
\n" ); document.write( "university. Of the 4000 students, 800 students are seniors, 1800 students are females and
\n" ); document.write( "450 of the 1800 females are seniors.
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\n" ); document.write( "• What is the probability that a student selected at random is a senior given that the
\n" ); document.write( "selected student is female?
\n" ); document.write( "• What is the probability that a student selected at random is female given that the
\n" ); document.write( "selected student is senior
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Algebra.Com's Answer #731379 by ikleyn(52798) $\"\"$ $\"About$

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document.write( "• What is the probability that a student selected at random is a senior given that the selected student is female?\r\n" );
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document.write( "      =  = 0.25 = 25%.       <<<---=== DENOMINATOR = #of females;  NUMERATOR =  #intersection(senior,females)\r\n" );
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document.write( "• What is the probability that a student selected at random is female given that the selected student is senior?\r\n" );
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document.write( "      =  = 0.5625 = 56.25%   <<<---=== DENOMINATOR = #of seniors; NUMERATOR = #of senior females.\r\n" );
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