👤

Sagot :

1) L'univers est l'ensemble des issues possibles, soit : {A,B,O,P,R}.

2) On vérifie que la somme vaut 1.

[tex]\matbb{P}(A)=\frac{90}{360}=0,25\\\matbb{P}(B)=\frac{45}{360}=0,125\\\matbb{P}(O)=\frac{45}{360}=0,125\\\matbb{P}(R)=\frac{120}{360}=0,33\\\matbb{P}(P)=\frac{60}{360}=0,17\\[/tex]

3)a) [tex]\matbb{P}(E_1)=\matbb{P}(A)+\matbb{P}(B)=0,375[/tex]

b) [tex]\matbb{P}(E_2)=\matbb{P}(B)+\matbb{P}(O)+\matbb{P}(P)=0,42[/tex]

c) [tex]\matbb{P}(E_3)=\matbb{P}(A)=0,25[/tex]

d) [tex]\matbb{P}(E_4)=\matbb{P}(A)+\matbb{P}(R)+\matbb{P}(B)+\matbb{P}(P)=0,875[/tex]

© 2024 IDNLearn. All rights reserved.