dennis roberts wrote:
>
> in some cases ... chi square test statistics require using ONLY 1 tail ...
> of the relevant chi square distribution ... but some cases require using a
> two tailed approach ...
>
> same can be said of F test statistics ...
>
> can we say that about t test statistics? ( i am not talking the case where
> the researcher makes a one tail test out of the situation that is usually a
> 2 tailed test ... but where the natural test statistic calls for only using
> 1 end of the t distribution)
About the only place where a one-sided test is appropriate
is acceptance sampling.
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