Concept explainers
Clean Air
An environmentalist suggests that the
1. What is the claim?
2. What test would you use to test the claim? Why?
3. State the hypotheses.
4. Select a value for α and find the corresponding critical value.
5. What is the test value?
6. What is your decision?
7. Summarize the results.
8. Could a parametric test be used?
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