The Census Bureau reports that 82% of Americans over the age of 25 are high scho

Question

The Census Bureau reports that 82% of Americans over the age of 25 are high school graduates. A survey of randomly selected residents of certain county included 1350 who were over the age of 25, and 1108 of them were high school graduates. 25. (a) Find the mean and standard deviation for the number of high school graduates in groups of 1350 Americans over the age of Mean = Standard deviation (b) Is that county result of 1108 unusually high, or low, or neither? (Enter HIGH or LOW or NEITHER) NEITHER

Explanation / Answer

solution:-

a. the mean and standard deviation for the number of high school graduates in groups of 1350 Americans over the age of 25.

Mean = np = 1350*0.82 = 1107

standard deviation :-  sqrt[npq] = sqrt(1350*0.82*0.18)

= 14.11

b. NEITHER

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