Answer:
Go to the z table and find the z value associated with .075
The "trick" to using the z table is to look at the z score of "1".
THAT will tell you what percentage they are reporting. If the % is 84%, they are reporting from the left tail to the value. If they report 34%, they are reporting from the mean to the score.
The table I used reported 34% (.34), so it is reporting from the mean. NOW, I wish to find the z score such that 7.5% is to the "right" of that score. Thus, 42.5% must be to the LEFT of the z score. (i.e. 42.5% from the mean to the score.)
Going to the table yields the number 1.44.
Since the curve is symmetrical, the "left value" must be - 1.44
