document.write( "Question 1084228: Solve the problem; z = datavalue - mean / standard deviation.\r
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document.write( "Question: Scores on a test are normally distributed with a mean of 61 and a standard deviation of 5. What is the percentile for an exam score of 60? Round the percentile to the nearest tenth.\r
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document.write( "A) 40.1
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document.write( "B) 2.9
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document.write( "C) 42.1
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document.write( "D) -0.2 \n" );
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Algebra.Com's Answer #698314 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! z=(x-mean)/sd \n" ); document.write( "=(60-61)/5 \n" ); document.write( "=-0.2 \n" ); document.write( "probability of z < -0.2=0.4207. \n" ); document.write( "42.1st percentile. \n" ); document.write( "C. \n" ); document.write( " |