Re: st: Samspi non normality?

[Jeph Herrin <junk@spandrel.net>]

Depends on what assumptions (if any) you want to make and what
test you want to use.



Di Stefano, Paola wrote:
> Dear all,
>
> I'm trying to estimate a sample size for two-sample comparison of means
> using the command sampsi.
> The study is to test for a difference in effectiveness of 0.5 between
> two groups, assuming a sd(1.4)
> Is there any way to change the normality assumption? Is there another
> way to estimate sample size?
>  
> Thanks
> Paola
>
>
>
>
>
>
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