document.write( "Question 956428: The SAT has a mean of 450 and a standard deviation of 70. The ACT has a mean of 19 and a standard deviation of 5. Suppose that you score 550 on the SAT and 22 on the ACT. on which test did you have a better score. \n" ); document.write( "
Algebra.Com's Answer #584300 by stanbon(75887) ![]() You can put this solution on YOUR website! The SAT has a mean of 450 and a standard deviation of 70. \n" ); document.write( "z(550) = (550-450)/70 = 100/70 = 1.4286 \n" ); document.write( "---------- \r \n" ); document.write( "\n" ); document.write( "The ACT has a mean of 19 and a standard deviation of 5. \n" ); document.write( "a(22) = (22-19)/5 = 2/5 = 0.4 \n" ); document.write( "-------------------------------------- \n" ); document.write( " Suppose that you score 550 on the SAT and 22 on the ACT. on which test did you have a better score. \n" ); document.write( "----- \n" ); document.write( "Ans: The SAT score was 1.4 standard deviations above the mean. \n" ); document.write( "The ACT score was only 0.4 standard deviations above the mean. \n" ); document.write( "---- \n" ); document.write( "SAT score was better. \n" ); document.write( "---- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------- \n" ); document.write( " |