### Finding Variables From Z-Scores

Assuming that the Z-scores are normally distributed with a mean u = 0 and a standard deviation sigma = 1.0 and if: a. P (0<z<a) = 0.3212 + n/100, find a? b. P (-b<z<b) = 0.3182 - n/100, find b? Note: if the number is not in the table use the nearest number in the table.