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  1. Explain the difference between the   null hypothesis and alternative hypothesis. Which one can be proven in a   statistical sense?
  2. How can you determine when to use a lower one‐tailed test of hypothesis versus an upper one‐tailed test?
  3. Explain the purpose of the chi‐square test for independence. Provide some practical examples where this test might    be used in business.
  4. Explain the difference between simple and multiple linear regression.
  5. Explain what is the coefficient of    determination, R^2 (R-squared)? What does it measure

 

 

 

 

 

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