Variable aléatoire (sans espérance)
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Medium
Emilie GRANGER
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 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
10 mins • 1 pt
0,045
0,57
0,615
0,955
3.
MULTIPLE SELECT QUESTION
10 mins • 1 pt
On considère l'arbre ci-dessus représentant la répétition de deux épreuves de Bernoulli identiques et indépendantes. Soit X la variable aléatoire qui compte le nombre de fois où S est réalisé. Cocher les 3 valeurs que peut prendre X.
0
1
2
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Soit X la variable aléatoire qui compte le nombre de fois où S est réalisé. Quelle est la valeur de P(X = 3) ?
5.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Quelle est la valeur de p?
(On notera la réponse sous la forme : p=...)
6.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
P(X=1,2)=...
7.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
P(X=2,2)=...
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