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1. Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?

2. What are the differences between one- and two- sample hypothesis tests? Describe the correct mathematical form for specifying the null and alternative hypotheses for both types of tests.

3. Explain Type I and Type II errors. Which one is controllable by the experimenter?

4. What is the difference between paired and independent samples?

5. Provide some practical examples from FINANCIAL SALES where regression models might be used.

6. Explain the difference between simple and multiple linear regression.

7. What do we mean by "significance of regression?"

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