<PRE><B>Question 506351</B>
The Census Bureau reports that 82% of Americans over the age of 25 are high school graduates. 
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A survey of randomly selected residents of certain county included 1260 who were over the age of 25, and 1035 of them were high school graduates.
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(a) Find the mean and standard deviation for the number of high school graduates in groups of 1260 Americans over the age of 25. 
Mean = np = 1260*0.82 = 1033.2
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Standard deviation = sqrt[npq] = sqrt(1260*0.82*0.18) = 13.64
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Is that county result of 1035 unusually high, or low, or neither? 
Neither
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Cheers,
Stan H.</PRE>