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- | ====== Question of the day ====== | ||
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- | <WRAP center round tip 100%> **Question.** | ||
- | Soit $X$ une variable aléatoire de loi $N(0,1)$. On pose $a=\PE[(X-1)^2]$. Donner la valeur de $a$. | ||
- | </WRAP> | ||
- | <WRAP center> | ||
- | ^ Réponse A ^ Réponse B ^ Réponse C ^ | ||
- | | $a=1$ | $a=2$ | Je ne sais pas | | ||
- | </WRAP> | ||
- | {{page>:reponse}} | ||