What condition or conditions must hold true for the sampling distribution of the sample mean to be

Question:

What condition or conditions must hold true for the sampling distribution of the sample mean to be normal when the sample size is less than 30?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...

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