The Coca-Cola Company introduced New Coke in 1985. Within three months of this i
ID: 3335257 • Letter: T
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
(a-1) 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.)
(a-2) At the 0.05 significance level, what is the conclusion?
(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 3 decimal places.)
Building 1 2 3 4 5 6 7 8 9 10 Coke Classic 38 141 145 40 144 32 75 221 123 92 New Coke 5 114 64 64 37 11 34 147 58 144 Pepsi 28 95 95 36 58 46 62 116 72 108Explanation / Answer
(a-1) 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.)
a-2. Ans: At the 0.05 significance level, the conclusion is "Reject H0" because the estimated p-value is less than significance level 0.05.
b) Ans:
Ans: Test statistic: F=7.10 p-value=0.005