math

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

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asked by nicole
  1. What is your thinking? http://davidmlane.com/hyperstat/z_table.html

    1. 0
    posted by bobpursley
  2. Nice
    http://www.jiskha.com/display.cgi?id=1271428581

    1. 0
    posted by Reiny
  3. ok I got b for the answer is that correct?

    1. 0
    posted by nicole
  4. If it is for the bottom 10% it must be lower than the mean!

    1. 0
    posted by Damon
  5. ok so it will be a?

    1. 0
    posted by nicole

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