[R] Fisher test problem
markleeds at verizon.net
markleeds at verizon.net
Sun Mar 22 04:53:35 CET 2009
Thanks berwin. See what I sent to Ben. I better start looking up my
stat textbooks or going back to class before I start using stat terms.
You guys are on top of things !!!!.
On Sat, Mar 21, 2009 at 10:50 PM, Berwin A Turlach wrote:
> G'day Mark,
>
> On Sat, 21 Mar 2009 22:08:21 -0500 (CDT)
> markleeds at verizon.net wrote:
>
>> by definition, the one tailed p-value has to be <= 0.5
>
> Can you point me to such a definition? I was not aware that this is
> the case. :)
>
> And your example:
>
>> A) Suppose you are testing
>>
>> Ho: u = u_0
>> H1 u > u_0
>>
>> and your t-stat was -0.3 Then prob( T > t_0) = 0.62 so your pvalue
>> would be 0.62.
>
> seems to contradict your statement. A one sided-test, hence a
> one-tailed p-value, which yields a p-value larger than 0.5.
>
> But, perhaps, we are just using different terminology.
>
> Cheers,
>
> Berwin
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