QUESTION 13 Which of the following is an incorrect statement? When the sample size n < 30, the sampling distribution of the sample mean is approximately normal even if the population is not normally distributed. The sampling distribution of the sample mean has standard error even if the population is not √n normally distributed. The sampling distribution of the sample mean is exactly normal if the population has a normal distribution regardless of the sample size. The sampling distribution of the sample mean has mean equal to the population mean even if the population is not normally distributed.

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