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Un distributeur de graines affirme que 90% de ses graines germent. Combien de graines doit-on tester pour estimer la proportion p des graines qui germent

Un distributeur de graines affirme que 90% de ses graines germent. Combien de graines doit-on tester pour estimer la proportion p des graines qui germent avec une marge d'erreur maximale de 0, 05 et un niveau de confiance de 90%

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