AreaUnderNormalCurve PDF
AreaUnderNormalCurve PDF
AreaUnderNormalCurve PDF
Note that the table only gives areas corresponding to positive z-scores - i.e., ones falling to the right of the mean.
For negative z-scores (i.e. for areas to the left of the mean on the graph above) simply look up the z-score as if it were positive. (The normal curve
is symmetrical, so negative z-scores cut off the same proportions of area under the curve as do positive z-scores).