1. The file social media.csv contains data from a survey conducted by the Pew Research Center to investigate social media use in the United States in 2018. Sample respondents (who are representive of the United States population) were asked whether their age was over or under 50 years and whether it would be hard for them to give up social media.

In the file 389/880 people under 50 said yes and 407 / 1073 people over 50 said yes.

A. Please clearly denote your answer to each of the following questions:

Which inference procedure is appropriate to test if there is an association between age and enjoy- ment of social media use? Explain.

What are the appropriate hypotheses for the test?

Conduct the appropriate test. Display intermediate components of the process.

Is the conclusion made from this test reliable? Explain.

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Explain why a second inference procedure is appropriate to test if age influences enjoyment of social media use.

1. Please clearly denote your answer to each of the following questions:
2. What are the appropriate hypotheses for this second test?
3. Conduct the second appropriate test.
4. Is the conclusion made from the second test reliable? Explain.
5. Construct a 95% confidence interval to estimate the difference in enjoyment of social media be- tween the over and under 50 U.S. populations.
6. Is the interval for this second test reliable? Explain.
7. Please clearly denote your answer to each of the following questions: What components of the two tests are the same?
8. Do the conclusions made from these tests agree?
9. Would both procedures be appropriate to test if the U.S. population under 50 enjoys social media more? Explain.