Monday

March 30, 2015

March 30, 2015

Posted by **Ann** on Sunday, October 14, 2012 at 12:10pm.

A. What percentage of Americans earn below $22,000?

B. What percentage of Americans earn above 42,000?

- Statistics -
**David Q/R**, Sunday, October 14, 2012 at 1:45pmI'm going to assume that you mean the average annual salary is $30k, not $300k - because $300k sounds a bit excessive to me, even for Americans! If so, the proportion of Americans who earn below $22k should be the area to the left of ($22k-$30k)/$7k = -1.143 in a set of Normal tables, which is 12.7%. The same sort of calculation for b) gives the area to the right of ($42k-$30k)/$7k = 1.714, which is the same as 1 - (area to the left of 1.714) = 1 - 0.957 = 4.3%.

**Answer this Question**

**Related Questions**

math - Assume that the average annual salary for a worker in the United States ...

Math - Assume that the average annual salary for a worker in the United States ...

math - Assume that the average annual salary for a worker in the United States ...

statistics - Salaries for various positions can vary significantly depending on ...

statistics - The average salary for graduates entering the actuarial field is $...

statistics - According to Advertising Age, the average base salary for women ...

statistic - Assume that the salaries of elementary school teachers in the United...

statistics - According to a website about salaries, the national average salary ...

Math check and help - WageWeb is a service of HRPDI and provides compensation ...

math - WageWeb is a service of HRPDI and provides compensation information on ...