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re:[ap-stat] p vs. t or z in hypothesis testing
Posted:
Jul 14, 2011 10:02 PM
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Nicole,
There is a "classical" approach to hypothesis testing that
uses only critical values and never looks at the p-value.
There is general agreement among statisticians that the
"modern," p-value, approach can provide additional information
beyond that of the classical approach.
So, in short, no you don't need p-values. However, modern
statistics uses them. In fact, if you go to the New England
Journal of Medicine online and look at some of the research
articles, you will see something like this: (P=0.004). I
can't recall having ever seen (T=2.623 < t_0=3.015).
Regards,
Doug
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