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Suppose X is a random variable with mean µ. Suppose we observe X many times and keep track of the of the observed values. The law of large numbers says thatQuestion 10Answera.The value of µ will get larger and larger as we observe Xb.As we observe X more and more, this average and the value of µ will get larger and larger.c.As we observe X more and more, this average will get to be a larger and larger multiple of µ.d.This average will get closer and closer to µ as we observe X more and more oftene.All the above are true.

Question

Suppose X is a random variable with mean µ. Suppose we observe X many times and keep track of the of the observed values. The law of large numbers says thatQuestion 10Answera.The value of µ will get larger and larger as we observe Xb.As we observe X more and more, this average and the value of µ will get larger and larger.c.As we observe X more and more, this average will get to be a larger and larger multiple of µ.d.This average will get closer and closer to µ as we observe X more and more oftene.All the above are true.

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Solution

Vamos a analizar cada opción paso a paso:

a. La afirmación "El valor de µ se hará cada vez más grande a medida que observamos X" es incorrecta. El valor de µ es una constante, la media de la distribución de X, y no cambia con el número de observaciones.

b. La afirmación "A medida que observamos X más y más, este promedio y el valor de µ se harán cada vez más grandes" también es incorrecta. Nuevamente, µ es una constante y no cambia con el número de observaciones. Además, el promedio de las observaciones no necesariamente se hace más grande; se aproxima a µ.

c. La afirmación "A medida que observamos X más y más, este promedio llegará a ser un múltiplo cada vez mayor de µ" es incorrecta. El promedio de las observaciones se aproxima a µ, no a un múltiplo de µ.

d. La afirmación "Este promedio se acercará cada vez más a µ a medida que observamos X más y más a menudo" es correcta. Esto es precisamente lo que establece la ley de los grandes números: que el promedio de las observaciones de una variable aleatoria se aproxima a la media de la distribución a medida que el número de observaciones aumenta.

e. La afirmación "Todas las anteriores son verdaderas" es incorrecta, ya que solo la opción d es correcta.

Por lo tanto, la respuesta correcta es:

d. Este promedio se acercará cada vez más a µ a medida que observamos X más y más a menudo.

This problem has been solved

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