document.write( "Question 221123: Suppose that the mean score of a class of 28 students was 74. The 18 male students in the class had a mean score of 66. What was the mean score for the 10 female students? \r
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document.write( "I don't understand how to find this answer. \n" );
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Algebra.Com's Answer #165911 by stanbon(75887) ![]() You can put this solution on YOUR website! Suppose that the mean score of a class of 28 students was 74. The 18 male students in the class had a mean score of 66. What was the mean score for the 10 female students? \n" ); document.write( "I don't understand how to find this answer. \n" ); document.write( "----------------------------- \n" ); document.write( "Total of all the scores must have been 28*74= 2074 \n" ); document.write( "Total of all the men's scores must have been 18*66 = 1188 \n" ); document.write( "------------------ \n" ); document.write( "That leaves 2074-1188 = 886 score points supplied by the girls. \n" ); document.write( "------------------- \n" ); document.write( "So mean girl's score must have been 886/10 = 88.6 \n" ); document.write( "=============================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |