document.write( "Question 185966: find the 40th percentile of the normal curve with mean 80 and standard deviation 24.2. \n" ); document.write( "
Algebra.Com's Answer #139693 by stanbon(75887) ![]() You can put this solution on YOUR website! find the 40th percentile of the normal curve with mean 80 and standard deviation 24.2. \n" ); document.write( "---- \n" ); document.write( "The z-value corresponding to the 40%ile is -0.2533 \n" ); document.write( "-------- \n" ); document.write( "Find the x associated with that z-value: \n" ); document.write( "z = (x-u)/s \n" ); document.write( "-0.2533 = (x-80)/24.2 \n" ); document.write( "x-80 = 24.2*-0.2533 \n" ); document.write( "x-80 = -6.1299 \n" ); document.write( "x = 73.8701 \n" ); document.write( "============= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |