math
posted by nicole .
Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $36,000 and a standards deviation of $6000. What is the cutoff salary for teachers in the bottom 10%?
Answer choice:
a. $28,320
b. $43,680
c. $45,870
d. $26,130

What is your thinking? http://davidmlane.com/hyperstat/z_table.html


ok I got b for the answer is that correct?

If it is for the bottom 10% it must be lower than the mean!

ok so it will be a?