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Assume that the average annual salary for a worker in the United States is $27,500 and that the annual salaries for Americans are normally...

Assume that the average annual salary for a worker in the United States is $27,500 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $6,250. Find the following:

(A)What percentage of Americans earn below $18,000?
(B)What percentage of Americans earn above $40,000?

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