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On considre que les rsultats obtenus par les tudiants(es) en sciencesadministratives, pour un test d'aptitude en informatique de gestion, sont distribusselon une loi normale. Pour

On considre que les rsultats obtenus par les tudiants(es) en sciencesadministratives, pour un test d'aptitude en informatique de gestion, sont distribusselon une loi normale. Pour un chantillon alatoire de 25 tudiants(es), le rsultatmoyen est 70,6 et la variance, s2 = 225. Estimer par intervalle de confiance, lalimite suprieure de cet intervalle pour le rsultat moyen de l'ensemble detudiants(es) en sciences administratives avec un niveau de confiance de 99%.0 78,99076,79075,730 75,06074,55

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