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Page precedente Page suivante Page 8 de 44 Question 8 (1 point) On a mesure sur 100 unites de meme type d'un montage transistorise, le

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Page precedente Page suivante Page 8 de 44 Question 8 (1 point) On a mesure sur 100 unites de meme type d'un montage transistorise, le temps requis par une main-d'oeuvre specialisee pour en effectuer l'assemblage. On a obtenu un temps moyen de 10,2 minutes avec un ecart-type de 1,8 minutes. Quelle est la marge d'erreur de cet intervalle de confiance, pour le temps moyen reel d'assemblage, ayant un niveau de confiance de 80% ? 0,353 0,231 0,296 0,259 O 0,464 Page precedente Page suivante Page 8 de 44

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