document.write( "Question 473091: in the class,there are 12 freshman, of whom 8 are males and 15 sophomores of whom 5 are female. If one student is selected at random, what is the probability of selecting a fresman of a female. \n" ); document.write( "

Algebra.Com's Answer #324390 by Edwin McCravy(20055) $\"\"$ $\"About$

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in the class,there are 12 freshman, of whom 8 are males and 15 sophomores of whom 5 are female. If one student is selected at random, what is the probability of selecting a freshman or a female.
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document.write( "Make this table.  We can fill it in this far\r\n" );
document.write( "directly from the above information:\r\n" );
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document.write( "           FRESHMAN     SOPHOMORE     TOTALS\r\n" );
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document.write( "MALES   |      8     |             ||       | \r\n" );
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document.write( "FEMALES |            |      5      ||       |\r\n" );
document.write( "--------------------------------------------\r\n" );
document.write( "--------------------------------------------\r\n" );
document.write( "TOTALS  |     12     |     15      ||       |\r\n" );
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document.write( "Subtract 8 from 12 to get 4 FEMALE FRESHMEN\r\n" );
document.write( "Subtract 5 from 15 to get 10 MALE SOPHOMORES\r\n" );
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document.write( "           FRESHMAN     SOPHOMORE     TOTALS\r\n" );
document.write( "---------------------------------------------\r\n" );
document.write( "MALES   |      8     |     10      ||       |\r\n" );
document.write( "---------------------------------------------\r\n" );
document.write( "FEMALES |      4     |      5      ||       |\r\n" );
document.write( "---------------------------------------------\r\n" );
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document.write( "TOTALS  |     12     |     15      ||       |\r\n" );
document.write( "---------------------------------------------\r\n" );
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document.write( "Then we do the totals:\r\n" );
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document.write( "           FRESHMAN     SOPHOMORE     TOTALS\r\n" );
document.write( "---------------------------------------------\r\n" );
document.write( "MALES   |      8     |     10      ||   18  |\r\n" );
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document.write( "FEMALES |      4     |      5      ||    9  |\r\n" );
document.write( "---------------------------------------------\r\n" );
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document.write( "TOTALS  |     12     |     15      ||   27  |\r\n" );
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document.write( "I will color all the ones that are either a \r\n" );
document.write( "freshman or a female:\r\n" );
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document.write( "           FRESHMAN     SOPHOMORE     TOTALS\r\n" );
document.write( "---------------------------------------------\r\n" );
document.write( "MALES   |      8     |     10      ||   18  |\r\n" );
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document.write( "FEMALES |      4     |      5      ||    9  |\r\n" );
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document.write( "TOTALS  |     12     |     15      ||   27  |\r\n" );
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document.write( "That's 8+4+5 or 17 out of the 27 total.\r\n" );
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document.write( "Answer \r\n" );
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document.write( "Edwin

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