document.write( "Question 445434: Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation of 20. Find P(sub/small)14, which is the IQ score separating the bottom 14% from the top 86%.
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Algebra.Com's Answer #306825 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "IQ scores that are normally distributed with a  of 105 and a of 20
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document.write( "Find 
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document.write( "  *Note: 
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document.write( " lower 14% then z = -1.0803  NORMSINV(0.14)          
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document.write( " -1.0803 = (x - 105)/20
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document.write( " 105 - 20*1.0803 = 83.394
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document.write( " top 86% then z = 1.0803     NORMSINV(0.86)
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document.write( "   105 + .20*1.0803 = 126.606\r
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document.write( "     126.6 - 83.4 = 43 IQ points separating the bottom 14% from the top 86%.
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