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11.65 Canada's Food Basics Exercise 10.42 examined an advertisement for Food Basics, a supermarket chain in Canada....

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11.65 Canada's Food Basics Exercise 10.42 examined an advertisement for Food Basics, a supermarket chain in Canada. The advertiser claims that Food Basics has consistently had lower prices than four other full-service supermarkets. The average weekly total based on the prices of approximately 95 items is given for five different supermarket chains recorded during four consecutive weeks.

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a. What type of design has been used in this experiment?

b. Conduct an analysis of variance for the data.

c. Is there sufficient evidence to indicate a difference in the average weekly totals for the five supermar- kets? Use a = 0.05.

d. Use Tukey's method for paired comparisons to determine which of the means are significantly different from each other. Use a = 0.05.

Transcribed Image Text:

Week Food Basics Zehrs Loblaws IGA Price Chopper 1 $254.26 $256.03 $267.92 $260.71 $258.84 2 240.62 255.65 251.55 251.80 242.14 3 231.90 255.12 245.89 246.77 246.80 4 234.13 261.18 254.12 249.45 248.99

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