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    Question about Normal Distributions and Z-Scores

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    Assume that the average annual salary for a worker in the United States is $27500 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $6250. Find the following:
    a) What percentage of Americans earn below $18000?
    b) What percentage of Americans earn above $40000?

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    Assume that the average annual salary for a worker in the United States is $27500 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $6250. Find the following:
    a) ...

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    Normal Distributions and Z-Scores are investigated. The solution is detailed and well presented. The response was given a rating of "5/5" by the student who originally posted the question.

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