In Exercises 1– 4, assume that you work for the Internal Revenue Service. You are asked to write a report about the claim that 57% of U.S. adults have an unfavorable impression of the federal income...

In Exercises 1– 4, assume that you work for the Internal Revenue Service. You are asked to write a report about the claim that 57% of U.S. adults have an  unfavorable impression of the federal income tax  ystem. (Adapted from ABC News/Washington Post Poll)

1. Not Using a Random Sample How could you choose a random sample to test this hypothesis?

2. Attempting to Prove the Null Hypothesis What is the null hypothesis in this situation? Describe how your report could be incorrect by trying to prove the null hypothesis.

3. Making a Type I Error Describe how your report could make a type I error.

4. Making a Type II Error Describe how your report could make a type II error.