document.write( "Question 645240: SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of approximately 2.5? Show all work as to how this is obtained.
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Algebra.Com's Answer #405403 by stanbon(75887) $\"\"$ $\"About$

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SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of approximately 2.5? Show all work as to how this is obtained.
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\n" ); document.write( "Find the z-value with a left tail of 0.025
\n" ); document.write( "invNorm(0.025) = -1.96
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\n" ); document.write( "Find the score using x = z*s + u
\n" ); document.write( "x = -1.96*100+500 = 500-196 = 304
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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