Question: In Exercise 9.24, a fast-food chain compared two ways of promoting a turkey burger. In a separate experiment with 10 pairs of stores, the difference

In Exercise 9.24, a fast-food chain compared two ways of promoting a turkey burger. In a separate experiment with 10 pairs of stores, the difference in the month€™s increased sales between the store that used coupons and the store with the outside poster had a mean of $3000. Does this indicate a true difference between mean sales for the two advertising approaches? Answer by using the output shown to test that the population mean difference is 0, carrying out the five steps of a significance test. Make a decision using a 0.05 significance level.

Test of mu-0 vs.mu not 0 Variable N Mean 3000 95.0% CI StDev SE Mean 4000 1264.91 10 Sales Variable Sales (138.8, 5861.2) 2.372 0.04177

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