The bottom 30% students failed an end of semester exam. The mean for the the test was 120 and the standard deviation was 17. What was the passing score?

Answer 1

you can play around with Z table stuff at

http://davidmlane.com/hyperstat/z_table.html

Answer 2

bottom 30% = Z = -.52

120 - 17(.52) = ?

Answer 3

answer