document.write( "Question 1120397: In a recent year, a sample of grade 8 Washington State public school students taking a mathematics assessment test had a mean score of 281 with a standard deviation of 34.4. Possible test scores could range from 0 to 500. Assume that the scores are normally distributed.\r
\n" ); document.write( "\n" ); document.write( "Find the probability that a student scored higher than 315.
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Algebra.Com's Answer #737270 by Boreal(15235)\"\" \"About 
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z=(x-mean)/sd
\n" ); document.write( "z>(315-281)/34.4 or 0.99
\n" ); document.write( "probability is 0.1611
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