# Question

Test the slope of the regression line determined in Problem 12.8. Use α = .10.

Advertising .... Sales

12.5 ...... 148

3.7 ...... 55

21.6 ...... 338

60.0 ...... 994

37.6 ...... 541

6.1 ...... 89

16.8 ...... 126

41.2 ...... 379

Advertising .... Sales

12.5 ...... 148

3.7 ...... 55

21.6 ...... 338

60.0 ...... 994

37.6 ...... 541

6.1 ...... 89

16.8 ...... 126

41.2 ...... 379

## Answer to relevant Questions

Test the slope of the regression line determined in Problem 12.9. Use a 5% level of significance.Bond Rate .. Prime Interest Rate5% ....... 16%12 ....... 69 ....... 815 ....... 47 ....... 7Construct a 98% confidence interval for the average value of y for Problem 12.8; use x = 20.Construct a 98% prediction interval for a single value of y for Problem 14.3; use x = 20.Which is wider? Why?Use the following data for parts (a) through (g).a. Determine the equation of the simple regression line to predict y from x.b. Using the x values, solve for the predicted values of y and the residuals.c. Solve for SSE.d. ...How strong is the correlation between the inflation rate and 30-year treasury yields? The following data published by Fuji Securities are given as pairs of inflation rates and treasury yields for selected years over a ...Compute r2 for Problem 12.25 (Problem 12.7). Discuss the value of r2 obtained.Post your question

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