View Single Post
  #3  
Old June 30th, 2009, 10:31 AM
madgab madgab is offline
Newbie
 
Join Date: Jun 2009
Posts: 18
Thanks: 12
Thanked 2 Times in 2 Posts
madgab is on a distinguished road
Default

The mean is the same but the SD is divided by \sqrt{n}? I never would have known that. What is that SD equation from? Also, how can you figure it is a normal distribution? It is probably obvious but I can't find info like that at all in my book and would like to learn.
Reply With Quote