Exercise 13.16 described a regression analysis in which y
Chapter 0, Problem 13.23(choose chapter or problem)
Exercise 13.16 described a regression analysis in which y sales revenue and x advertising expenditure. Summary quantities given there yield n 15 b 52.27 sb 8.05a. Test the hypothesis H0: b 0 versus Ha: b 0 using a significance level of .05. What does your conclusion say about the nature of the relationship between x and y? b. Consider the hypothesis H0: b 40 versus Ha: b 40. The null hypothesis states that the average change in sales revenue associated with a 1-unit increase in advertising expenditure is (at most) $40,000. Carry out a test using significance level .01.
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