Thread: find the sample size required for 95% CI
View Single Post
  #3  
Old June 30th, 2009, 08:51 AM
kclark36 kclark36 is offline
Newbie
  
Join Date: Jun 2009
Posts: 8
Thanks: 3
Thanked 0 Times in 0 Posts
kclark36 is on a distinguished road
Default
thankyou! I knew it was something like that. For the 0.025, I would get than answer from the table, but rather than the \alphaanswer, it is the \alpha/2 answer (2.240)? I'm just so amazed they even have that on the table.

\frac{2.24^{2}*225}{.0001}=\frac{1128.96}{.0001}=11289600=n?

Did I mess up somewhere? Than number seems way too huge. Thankyou
Last edited by kclark36; June 30th, 2009 at 08:51 AM. Reason: i forgot the math symbols
Reply With Quote