Aires et loi normale

La courbe représente la densité de la loi normale d'espérance 0.32 et d'écart-type 0.66.

On note X une variable aléatoire de loi normale d'espérance 0.32 et d'écart-type 0.66.

L'aire du domaine colorié est la probabilité d'un des événements ci-dessous, lequel ?



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