Can someone provide me with the formula for calculating the probaility
density function. Here is what I have, and what I need to get to:

x value = 60
mean = 40
st dev = 15

thus:

z score = 1.33 (using "standardize" function)
Area under normal curve = 0.09 (1-NORMSDIST(1.33))

The value I am trying to get to is 0.16 (this is supposed to be the
probability density function for the above value)

Thanks

Ariel