1. What is the measure of a population called? (1 pt)

2. Define a sample. (1 pt)

3. What is a measure of a sample called? (1 pt)

4. Why is it important to use random sampling when possible? (1 pt)

5. Consider the mean systolic blood pressure of a sample of 20 individuals. The sample mean is 120 and the population standard deviation is 15. What is the SEM of this sample? Show all the work and round your final answer to one (1) decimal point. (1 pt)

6. What is the confidence interval for this sample? Show all the work and round your final answer to one (1) decimal point. (1 pt)

7. Interpret the confidence interval for this sample. (1 pt)