If n samples are extracted from any population with mean value [img=11x18]1803dc1a4012523.png[/img] and variance [img=18x22]1803dc1a48a9511.png[/img], then
A: When n is sufficiently large, the distribution of sample mean is approximately normal distribution.
B: When n<10, the distribution of sample mean is approximately normal distribution.
C: The distribution of sample mean is nothing to do with n.
D: No matter how big n is, the distribution of the sample mean is not going to be close to a normal distribution.
A: When n is sufficiently large, the distribution of sample mean is approximately normal distribution.
B: When n<10, the distribution of sample mean is approximately normal distribution.
C: The distribution of sample mean is nothing to do with n.
D: No matter how big n is, the distribution of the sample mean is not going to be close to a normal distribution.
举一反三
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