MULTIPLE CHOICE

3. As the sample size increases, the standard deviation of the sample distribution of the mean will: (5p)

1. Increase
2. Decrease
3. First increase then decrease
4. First decrease then increase

4. According to the Central limit theorem, as the sample size___, the sample distribution of the mean is closer to ___.(5p)

1. Increase, the population distribution
2. Decrease; the population distribution
3. Increase; a normal distribution
4. Decrease; a normal distribution

5. Which of the following description of the standard error of the mean is correct? (5p)

1. The standard error of the mean is the standard deviation of the sampling distribution of the mean
2. The standard error of the mean is the squared variance of the sampling distribution of the mean
3. Standard error is the sample standard deviation
4. Standard error is the same with population standard deviation