Please make the answer clear and easy to read, typed or good hand written. (1 po

Question

Please make the answer clear and easy to read, typed or good hand written.

(1 point) 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 1280 who were over the age of 25, and 1100 of them were high school graduates. (a) Find the mean and standard deviation for the number of high school graduates in groups of 1280 Americans over the age of 25. Mean = Standard deviation (b) Is that county result of 1100 unusually high, or low, or neither? (Enter HIGH or LOW or NEITHER) HIGH

Explanation / Answer

n = number of high school graduates over the age of 25 = 1100

p = 0.82 and q = 1 - p = 0.18

The mean = n * p = 1100 * 0.82 = 902

The standard deviation = Sqrt(n*p*q) = Sqrt(1100 * 0.82 * 0.18) = sqrt(162.36) = 12.74

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