Correction Exercice 2 ECO-2025N
05 يونيو 2025
دقيقة واحدة
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\dfrac{1}{8}
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\dfrac{3}{8}
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\begin{align*} &p(X=0)+\dfrac{1}{8}+\dfrac{3}{8}=1 \\ &\implies p(X=0)=\dfrac{4}{8}=\dfrac{1}{2} \end{align*}
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\begin{align*} E(X)&=\sum_{k=0}^{k=2} k.p(X=k)\\ &=0\times\dfrac12+1\times\dfrac18+2\times\dfrac38\\ &=\dfrac78 \end{align*}
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7
تسميات :
رياضيات
تعليم
→ السابق :
Correction Exercice 1 ECO-2025N
التالي ← :
Correction Exercice 3 ECO-2025N