document.write( "Question 1039002: The area under the density curve that is less than 6 points or greater than 8 points is 0.7857. If there are 28 students in the class how many students got between 6 and 8 points? \n" ); document.write( "
Algebra.Com's Answer #653738 by Theo(13342)![]() ![]() You can put this solution on YOUR website! i think you meant \"between 6 and 8 points\".\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "since the total value of the area under the density curve is 1, then the area of the density curve between 6 and 8 has to be 1 - .7857 which is equal to .2143.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".2143 of the students got between 6 and 8 points.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that would be .2143 * 28 = 6.0004 which round to 6.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "6 students got between 6 and 8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "22 students got less than 6 or greater than 8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "6/28 = .2142857143 which rounds to .2143 with accuracy of 4 decimal points. \n" ); document.write( "22/28 = .7857142857 which rounds to .7857 with accuracy of 4 decimal points.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |