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A Rate of Incoherence Applied to Fixed‐Level Testing

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journal contribution
posted on 01.01.2001, 00:00 by Mark J. Schervish, Teddy Seidenfeld, Joseph B. Kadane
It has long been known that the practice of testing all hypotheses at the same level (such as 0.05), regardless of the distribution of the data, is not consistent with Bayesian expected utility maximization. According to de Finetti’s “Dutch Book” argument, procedures that are not consistent with expected utility maximization are incoherent and they lead to gambles that are sure to lose no matter what happens. In this paper, we use a method to measure the rate at which incoherent procedures are sure to lose, so that we can distinguish slightly incoherent procedures from grossly incoherent ones. We present an analysis of testing a simple hypothesis against a simple alternative as a case‐study of how the method can work

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01/01/2001

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