If your normal table has negative values in the z-column then find z = -2.2 and go to the .05 column and read 0.0122, which is the answer. If your normal table does not have negative values in the z-column then find z = 2.2 and go to the .05 column and read 0.4878, then subtract that from 0.5000. Then 0.5000-0.4878 = 0.0122, which is the answer. Edwin