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Sampling Distribution of the Sample

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Please answer and fully explain the below question:

Under what condition, if any, is it not possible for us to assume that the sampling distribution of the sample mean is approximately normally distributed?

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Under what condition, if any, is it not possible for us to assume that the sampling distribution of the sample mean is approximately normally distributed?

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This can happen when the sample from which the sample mean is taken itself is not normally distributed, ...

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