Exercise 2

CNN conducted a survey of 500 American adults. 62% of those surveyed answered yes to the question, “Do you favor a law to ban the sale of assault weapons and semiautomatic rifles?” The reported margin of error was $\pm 4\%$.

1. What population is being studied?

2. What is the sample?

3. What type of data is this?

4. Is the 62% reported in the problem an example of a statistic or a parameter?

5. What is the confidence interval? Is the confidence interval about the statistic or the parameter?

6. Explain what the confidence interval tells you.