Posted by Jacob on Monday, June 14, 2010 at 2:14pm.
how to sketch the areas under the standard normal curveover the indicated intervals and find the specified areas
to the left z=0 to the left z=0.47 to the left of z=0.45

Statistics  PsyDAG, Wednesday, June 16, 2010 at 2:54am
50% is to the left of Z = 0 = mean
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the other Z scores.