statistics
posted by olivo .
The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz?

plug in your data here ....
http://davidmlane.com/hyperstat/z_table.html
to get .4013 
0.4013