A recent study found that people with insomnia are more likely to experience heart problems than people
Question:
a. What are the explanatory and response variables in this study?
b. Explain why amount of caffeine consumed might be a confounding variable in this study by explaining how caffeine consumption fits the two properties of confounding variables given in the box on page 93.
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a The explanatory variable for each person is whether or not they have insomnia and the respons...View the full answer
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