The Coca-Cola Company introduced New Coke in 1985. Within three months of this i

Question

The Coca-Cola Company introduced New Coke in 1985. Within three months of this introduction, negative consumer reaction forced Coca-Cola to reintroduce the original formula of Coke as Coca-Cola Classic. Suppose that two years later, in 1987, a marketing research firm in Chicago compared the sales of Coca-Cola Classic, New Coke, and Pepsi in public building vending machines. To do this, the marketing research firm randomly selected 10 public buildings in Chicago having both a Coke machine (selling Coke Classic and New Coke) and a Pepsi machine.

The Coca-Cola Data and a MINITAB Output of a Randomized Block ANOVA of the Data:

Two-way ANOVA: Cans versus Drink, Building

Calculate the value of the test statistic and p-value. (Round "test statistic" value to 2 decimal places and "p-value" to 4 decimal places.)

  

At the 0.05 significance level, what is the conclusion?

      

What is the Tukey simultaneous 95 percent confidence interval for the following? (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.)

  

                          Building 1 2 3 4 5 6 7 8 9 10 Coke Classic 49 143 140 46 135 34 78 212 119 82 New Coke 7 111 51 16 36 22 31 159 51 137 Pepsi 22 98 102 36 47 43 75 130 67 100

Explanation / Answer

a) 7.12, 0.005

b) Reject H0 (p value is equal to 0.05)

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