conducts a survey of 2,000 Americans. Using this survey, he measures the average level of support for taxing the rich among white and Black Americans.

The results are shown in the plot below. Using a difference in means test, finds a difference of .18 between the means with a p-value of .045.

Based on this description of Professor Thal's study, answer the following questions:

1. What is theindependent variableand the dependent variable in this study?

1. What is thesampleandpopulation in this study?

1. What is thenull hypothesis andalternative hypothesisin this study?

1. Do the results described above support the null hypothesis or the alternative hypothesis? Why?

1. Imagine that a fellow student who has not taken this class asked you to explain what theconfidence intervals in the plot mean. What would you tell them?

1. Imagine that a fellow student who has not taken this class asked you to explain the meaning of thep-value. What would you tell them?