document.write( "Question 754541: What is the probability that students scored below 400
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document.write( "in a SAT Math test in which the student scores have a mean of 500 with a Standard Deviation of 100? \n" );
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Algebra.Com's Answer #459224 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! What is the probability that students scored below 400 \n" ); document.write( "in a SAT Math test in which the student scores have a mean of 500 with a Standard Deviation of 100?\r \n" ); document.write( "\n" ); document.write( "since we have the mean and standard deviation, we can calculate the associated z value for 400\r \n" ); document.write( "\n" ); document.write( "z value = (400 - 500) / 100 = -100/100 = -1\r \n" ); document.write( "\n" ); document.write( "we then consult the normal distribution for z values\r \n" ); document.write( "\n" ); document.write( "P(x<400) = .1587 or 16% \n" ); document.write( " \n" ); document.write( " |