document.write( "Question 1179759: In Statistics and Probability examination, the average grade was 74 and the standard deviation was 7. If 11.9% of the class is given X’s scores, and the grades follow a normal distribution, what is the lowest possible score X and the highest possible score Y?
\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #809333 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "Hi\r\n" );
document.write( "Normal Distribution: µ = 74 and σ = 7\r\n" );
document.write( "11.9% of the class is given X’s score\r\n" );
document.write( "\r\n" );
document.write( " .0595 above and below the mean: .5 + .0595 = .5595\r\n" );
document.write( "invNorm(.5595,74,7) = 75\r\n" );
document.write( "\r\n" );
document.write( "the highest possible score X is 75  (1 to the right of mean 74)\r\n" );
document.write( "lowest is 74 - 1 = 73\r\n" );
document.write( "\r\n" );
document.write( "Your Reference did not work for me.\r\n" );
document.write( "If the intent was for 11.9% to get As...\r\n" );
document.write( "invNorm(.881,74,7) = 82.26  Round Up to next whole number\r\n" );
document.write( "or \r\n" );
document.write( "   \r\n" );
document.write( " 7*1.18 + 74 = 82.26  Round Up to next whole number\r\n" );
document.write( " \r\n" );
document.write( "For As:  lowest is 83  and highest, would be a possible 100.\r\n" );
document.write( "Wish You the Best in your Studies.\r\n" );
document.write( "

\n" ); document.write( " \n" ); document.write( "

\n" );