Posted by Jacob on Thursday, June 17, 2010 at 10:46am.
I am having trouble understanding standard normal distribution such as if p(z<0.13) the answer to that was 0.4483 but not understanding how that is computed.

Statistics  PsyDAG, Thursday, June 17, 2010 at 6:56pm
It was determined by using calculus. Even If I could tell you exactly how, I doubt if you have the background to understand explanation.