Small P-valuesindicatestrongevidenceagainst H0, becausethedatawouldthenbeunusual if H0 weretrue.Whydoesitnotmakesensetodefinea P-valueastheprobabilitythatthe test statisticequalsthe observedresult (when H0 is true)ratherthanasthetailprobability that theteststatisticequalsthe

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Small P-valuesindicatestrongevidenceagainst H0, becausethedatawouldthenbeunusual if H0 weretrue.Whydoesitnotmakesensetodefinea P-valueastheprobabilitythatthe test statisticequalsthe observedresult (when H0 is true)ratherthanasthetailprobability that theteststatisticequalsthe observedresultoravalueevenmoreextreme in thedirection predicted by Ha?

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