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Luis A. Afonso
Posts:
4,715
From:
LIsbon (Portugal)
Registered:
2/16/05


Re: pvalue < alpha, correct to reject the Null!
Posted:
Oct 29, 2012 9:31 PM


I guess (who can be sure in this instance?) the impossibility some people to believe that the pvalue < alpha condition leads to reject the null Hypothesis H0 is that, in fact, there is not a logic necessity connexion between pvalue and the cutoff preset alpha. We are, evidently, dealing with an induction, not at all with a deductive question: if the null is true there is only a tiny probability, say 5%, to get a significant output, i.e., a pvalue less than alpha. Once we observe such a result we decide inductively, that H0 is very unlike to be true.
Luis A. Afonso



