1. For which sample size is the distribution of the sample mean approximately normal when the sample was collected from a normal population? from a skewed population?

2. How does the mean of the sampling distribution of the sample mean compare to the mean of the population regardless of shape of the population distribution?

3. How does the standard deviation of the sampling distribution of the sample mean compare to the standard deviation of the population regardless of shape of the population distribution?

4. How does sample size affect the standard deviation of the sample means?