AP stat 2007 exam (help me with a problem)

<p>can somebody explain this to me?
The distribution of the diameters of a particular variety of oranges is approximately normal with a standard deviation of .3 inch. How does the diameter of an orange at the 67th percentile compare with the mean diameter?</p>

<p>a.) .201 below the mean
b.) .132 below the mean
c.) .132 above the mean
d.) .201 above the mean
e.) .440 above the mean</p>