document.write( "Question 418692: The foreign service exam gives a passing grade to only the top 10% of those taking the exam. The mean score is 84, with a standard deviation of 8. What should be the minimum passing grade?\r
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Algebra.Com's Answer #292957 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "NORMSINV(0.9) = 1.28 (using Excel function)
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document.write( "Value may also easily be found in a Table for:
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document.write( " \"Percentiles of the Standard Normal Distribution\"
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document.write( " 1.28 = X -84 /8
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document.write( " 8(1.28)+84 = X
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document.write( " 10.25 + 84 = 94.25 or 95 would be minumum passing grade\r
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document.write( "Note: Using X = 94  gives 10/8 = 1.25 which doesn't get You into the 90%
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