Question: =+13.23 Exercise 13.16 described a regression analysis in which y 5 sales revenue and x 5 advertising expenditure. Summary quantities given there yield n 5

=+13.23 Exercise 13.16 described a regression analysis in which y 5 sales revenue and x 5 advertising expenditure.

Summary quantities given there yield n 5 15 b 5 52.27 sb 5 8.05

a. Test the hypothesis H0 : b 5 0 versus Ha : b Þ 0 using

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