# math

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Assume that the average annual salary for a worker in the United States is \$32,000 and that the annual salaries for Americans are normally distributed with a standard deviation equal to \$7,000. Find the following:

(A) What percentage of Americans earn below \$24,000?
(B) What percentage of Americans earn above \$36,000?

(Points : 6)

• math -

(A) 24,000 is 8/7 of one standard deviation below the mean.

(B) 36,000 is 4/7 of one standard deviation above the mean.

You need a "normal distribution" table or computational tool to compute the percentages below 24,000 and above 36,000.

There is one such calcualtor tool at

For (A), I get 12.65%
For (B), I get 28.4%

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