[R] Homework help: Is this how CIs of normal distributions are computed?

[Zembower, Kevin]

Dan, I didn't realize that the t values were more accurate than the
normal approximation for n > about 30. I may have learned (incorrectly)
that the normal distribution should be used if n > 30, but now that I'm
thinking about it, this may have just been computationally economical
before computers.

Thanks for this thought.

-Kevin 

Dan Nordlund wrote:

You could probably use the Normal distribution as an approximation under
these circumstances, but why would you when you have a more accurate CI
using t.test?

Dan


Daniel J. Nordlund
Research and Data Analysis
Washington State Department of Social and Health Services
Olympia, WA  98504-5204
 
 

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.