Answer
When n=25, the sample distribution shown is not normally distributed. The shape of the distribution is large and the spread of distribution is very large. The sample distribution shown in n=80 is approximately normal. The shape of the sampling distribution is small but tall. The spread of the sampling distribution decreases, the mean is located in the center of the distribution. When n=29, the sample distribution shown is not normally distributed. However, the spread of the distribution decreases compared to n=25.
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