solution

The following is a sufficient condition, the Laplace– Liapounoff condition, for the central limit theorem: If X1, X2, X3, … is a sequence of independent random variables, each having an absolute third moment

The following is a sufficient condition, the Laplace– Liapounoff condition, for the central limit...-1

where Yn = X1 + X2 +···+ Xn, then the distribution of the standardized mean of the Xi approaches the standard normal distribution when n→q. Use this condition to show that the central limit theorem holds for the sequence of random variables of Exercise 7.

Consider the sequence of independent random variables X1, X2, X3, … having the uniform densities

The following is a sufficient condition, the Laplace– Liapounoff condition, for the central limit...-2

Use the sufficient condition of Exercise 7 to show that the central limit theorem holds.

Exercise 7

The following is a sufficient condition for the central limit theorem: If the random variables X1, X2, … , Xn are independent and uniformly bounded (that is, there exists a positive constant k such that the probability is zero that any one of the random variables Xi will take on a value greater than k or less than −k), then if the variance of

The following is a sufficient condition, the Laplace– Liapounoff condition, for the central limit...-3

becomes infinite when n→q, the distribution of the standardized mean of the Xi approaches the standard normal distribution. Show that this sufficient condition holds for a sequence of independent random variables Xi having the respective probability distributions

The following is a sufficient condition, the Laplace– Liapounoff condition, for the central limit...-4

 
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