A vitamin-water manufacturer wants to compare the effects on sales of three water colors: green, blue, and red. Four regions are selected for the test, with the following ANOVA results.
Compute the mean square and F to test the null hypothesis that there is no interaction at α = .01.

Question

A vitamin-water manufacturer wants to compare the effects on sales of three water colors: green, blue, and red. Four regions are selected for the test, with the following ANOVA results.
  Compute the mean square and F to test the null hypothesis that there is no interaction at α = .01.

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The Answer of A vitamin-water manufacturer wants to compare the effects on sales of three water colors: green, blue, and red. Four regions are selected for the test, with the following ANOVA results.
  Compute the mean square and F to test the null hypothesis that there is no interaction at α = .01.

A Vitamin-Water Manufacturer Wants to Compare the Effects on Sales