document.write( "Question 1194271: 7. In a class of advanced statistics, there are 10 first- year, 30 second year and 10 third- year
\n" ); document.write( "students. The final examination results reveal that 3 first- year, 10 second- year and 5 third- year
\n" ); document.write( "students received an A for the course. If a student from this class is selected at random and found
\n" ); document.write( "to get A, what is the probability that he was a second year student?
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Algebra.Com's Answer #826421 by ikleyn(52787) $\"\"$ $\"About$

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\n" ); document.write( "7. In a class of advanced statistics, there are 10 first- year, 30 second year and
\n" ); document.write( "10 third- year students. The final examination results reveal that 3 first- year,
\n" ); document.write( "10 second- year and 5 third- year students received an A for the course.
\n" ); document.write( "If a student from this class is selected at random and found
\n" ); document.write( "to get A, what is the probability that he was a second year student?
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document.write( "    It is  P =  =  = .    ANSWER\r\n" );
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document.write( "Working with the conditional probability problems, we can reduce the space of events, \r\n" );
document.write( "considering the events under the imposed condition.\r\n" );
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document.write( "Then the denominator of the probability fraction is the number of elements\r\n" );
document.write( "in the reduced space, while the numerator is the number of favorable elements\r\n" );
document.write( "in this reduced space of events.\r\n" );
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