Question

# The Coca-Cola Company introduced New Coke in 1985. Within three months of this introduction, negative consumer...

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:

 Building 1 2 3 4 5 6 7 8 9 10 Coke Classic 41 128 143 35 147 35 68 220 107 94 New Coke 8 105 61 61 37 20 39 138 63 152 Pepsi 31 83 102 36 57 45 64 124 77 101

Two-way ANOVA: Cans versus Drink, Building

 Source DF SS MS F P Drink 2 8,121.9 4,060.93 5.50 .014 Building 9 51,680.5 5,742.28 7.77 .000 Error 18 13,297.5 738.75 Total 29 73,099.9
 Descriptive Statistics: Cans Variable Drink Mean Cans Coke Classic 101.8 New Coke 63.4 Pepsi 72.0

(a-1) Calculate the value of the test statistic and p-value. (Round "test statistic" value to 2 decimal places and "p-value" to 3 decimal places.)

 Test statistic p-value

(a-2) At the 0.05 significance level, what is the conclusion?

 Reject H0 Do not reject H0

(b) 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 2 decimal places.)

 Confidence interval Coke Classic - New Coke [ , ] Coke Classic – Pepsi [ , ] New Coke – Pepsi [ , ]

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