ax se 0 ≤ x ≤ 1
Mathematics, 12.01.2021 04:40, uhhgray
Seja X uma vari´avel aleat´oria cont´ınua com fun¸c˜ao de densidade
f(x) =
ax se 0 ≤ x ≤ 1
a se 1 ≤ x ≤ 2
3a − ax se 2 ≤ x ≤ 3
0 em outro caso
onde a ´e uma constante.
(a) (0,6 pts.) Encontre o valor da constante a.
(b) (0,4 pts.) Calcule a esperan¸ca de X.
(c) (1,6 pts.) Seja X1, X2, X3 uma amostra independente de tamanho trˆes. Qual a
probabilidade de que exatamente um dos elementos dessa amostra seja maior do que
0, 9+0, 1k, onde k ´e igual 23
Answers: 1
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Seja X uma vari´avel aleat´oria cont´ınua com fun¸c˜ao de densidade
f(x) =
ax se 0 ≤ x ≤ 1
ax se 0 ≤ x ≤ 1
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