
Variables aléatoires, Epreuves de Bernoulli
Authored by Nicolas Mejjad
Mathematics
11th Grade
CCSS covered
Used 42+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Un joueur mise 2€ puis tire une carte au hasard. Si la carte est un as, il gagne 20€, s'il tire une figure (roi,dame,valet), il gagne 10€, sinon, il perd encore 5€. Soit G la variable aléatoire correspondant au gain total du joueur (G peut être négatif). Quelles sont les valeurs prises par G?
-7, 8 et 18
-5, 10 et 20
3, 12 et 22
7, 12 et 22
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Le tableau ci-dessus représente la loi de X. Cela décrit-il une loi de probabilité ?
(Ind: La somme des probabilités associées est-elle égale à 1? )
Oui
Non
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
(Ind: la somme de toutes les probabilités doit être égale à 1)
0,2
0,25
0,3
0,35
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Que vaut P(X 12) ?
0,045
0,57
0,615
0,955
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Quelle est la valeur de E(X) ?
1
Tags
CCSS.HSS.MD.A.2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Comment l'espérance d'une variable aléatoire X s'interprète-t-il ?
Comme une moyenne
Comme une médiane
Tags
CCSS.HSS.MD.A.2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
L'espérance de X est égale à
0,25
15,31
16,5
33,5
Tags
CCSS.HSS.MD.A.2
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