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###### Online Store Monthly E-commerce Sales (in 1000 s) Online Advertising Dollars (1000 s) 1330 670 ||950...

Online Store Monthly E-commerce Sales (in 1000 s) Online Advertising Dollars (1000 s) 1330 670 ||950 4.5 Il0.5 1560 |2.0 380 ||1.5 Note: this was a real data, but I changed some of the numbers to make your MANUAL computations easier. 1. Identify the most appropriate/logical Dependent and Independent variables for this study. 2. Is the linear relationship between the Dependent and Independent variables significant at a=0.05? Use both the global and individual tests to answer the questions. Show all your works. (3pts) 3. What are the Pearson correlation coefficient and Coefficient of determination? (0.5 pt) 4. Write the 95% confidence intervals for the regression coefficients (0.5 pt). Answer question 5 or 6, dependent on your answer to Question 1. (1 pt) 5. If you used the Sales as your dependent variable, then compute 95% confidence and prediction intervals for the Sales if we plan to spend $3,000 on advertisement. 6. If you used Advertising Dollar as your dependent variable, then compute 95% confidence and prediction intervals for Advertising Dollar, for the project sales of $700,000.

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