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

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

math 
nicole
ok I got b for the answer is that correct?

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

math 
nicole
ok so it will be a?
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