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Variable Aleatoria

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Variable Aleatoria

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(3)
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211 times made

Created by

Idaly Montoya Aguilar
Idaly Montoya Aguilar
Colombia

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Variable AleatoriaOnline version

Seleccionar la respuesta correcta

by Idaly Montoya Aguilar
1

Un envío de 11 computadoras similares para un distribuidor contiene 5 defectuosas. Si una escuela hace una compra aleatoria de 4 de esas computadoras. El valor esperado (µ) del número de defectuosos es:

2

Un jugador lanza dos monedas. Gana 2 ó 3 € si aparecen una o dos caras. Por otra parte pierde 4 € si no aparece cara. Determinar el valor esperado (µ) del juego y si éste es favorable.

3

Se lanza un par de dados. Se define la variable aleatoria X como la suma de las puntuaciones obtenidas. La desviación estándar es:

4

Una moneda cargada tal que la probabilidad de caer cara es P(C) = 2/3 y de caer sello es P(S) = 1/3, se lanza 3 veces, sea X la variable que asigna a cada punto de S el mayor numero de caras sucesivas que ocurran. El valor esperado (µ) es:

5

Una moneda esta cargada, de tal manera que la probabilidad de que ocurra cara es P(C) = 2/3 y de que ocurra sello es de P(S) = 1/3; esta moneda se lanza 3 veces, sea X la variable que asigna a cada punto del espacio muestral el mayor numero de caras sucesivas que ocurran. Cuál es la desviación estándar

6

Se selecciona al azar una muestra de tres artículos de una caja que contiene 12 de los cuales 3 son defectuosos. Calcular el valor esperado (µ) de los Artículos defectuosos.

 
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