Hi guys,

I have 2 problems that are kind of confusing me.

The assumptions are the same for both.

Help on either of them would be appreciated

Let 'z' be a standard normal random variable. Let '\phi ' be the

standard normal pdf and '\Phi ' be the standard normal cdf.

1. Show that

2. Show that

Where

I'm not sure if this would fit better here in calculus or in statistics, please tell me if I should put it in statistics.