document.write( "Question 675479: Scores on a certain exam are normally distributed with a mean of 78 and a variance of 25. What is the z-value for a score of 90? \n" ); document.write( "
Algebra.Com's Answer #419869 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Scores on a certain exam are normally distributed with a mean of 78 and a variance of 25. What is the z-value for a score of 90? \n" ); document.write( "====== \n" ); document.write( "z(90) = (90-78)/25 = 2/25 = 0.08 \n" ); document.write( "----- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |