Dans une ville, 12% de la population fument des cigares, 21% de la population fument des cigarettes et 70% de la population ne fument ni cigarettes ni cigares. Soit A l'venement o un rsident de cette ville choisi au hasard fume des cigares et B l'venement o cette personne fume des cigarettes. Laquelle des affirmations suivantes est fausse? A) P(A B) = 0.3 B) P(A ' B ' ) = 0.96 C) P(A B) = 0.03 D) P(A B ' ) = 0.28 E) P(A B ' ) < P(A).

English version :

In a city, 12% of the population smokes cigars, 21% of the population smokes cigarettes and 70% of the population smokes neither cigarettes nor cigars. Let A be the event where a randomly selected resident of this city smokes cigars and B be the event where this person smokes cigarettes. Which of the following statements is false? A) P(A B) = 0.3 B) P(A ' B ' ) = 0.96 C) P(A B) = 0.03 D) P(A B ' ) = 0.28 E) P(A B ' ) < P(A).