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Ejercicio #2 1) A continuacion, se presenta la distribucion de probabilidad de una variable aleatoria x. X f (x) 20 0.30 25 0.22 30 0.08

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Ejercicio #2 1) A continuacion, se presenta la distribucion de probabilidad de una variable aleatoria x. X f (x) 20 0.30 25 0.22 30 0.08 35 0.40 Contesta: a) Es valida esta distribucion, es decir, se considera una distribucion de probabilidad? Explica. (2 puntos) b) Cual es la probabilidad de que x = 20? (1 punto) c) Cual es la probabilidad de que x sea menor o igual que 25? (1 punto) d) Cual es la probabilidad de que x sea mayor que 25? (1 punto)

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