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On veut tester les hypothses suivantes H0 : = 2500, H1 : < 2500. Sur la base d'un chantillon de taille n = 100, provenant

On veut tester les hypothses suivantes H0 : = 2500, H1 : < 2500. Sur la base d'un chantillon de taille n = 100, provenant d'une population dont = 300, on adopte la rgle de dcision suivante : Rejeter H0 si X-barre < 2441,201, sinon ne pas rejeter H0. Quel est le seuil de signification du test

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