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What is the design of the following study? 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 researchers recorded the number of cans sold over a given period of time.

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Final answer:

The design of this study is an observational study that compared the sales of Coca-Cola Classic, New Coke, and Pepsi in public building vending machines using a random sample of 10 buildings in Chicago.

Step-by-step explanation:

The design of this study is an observational study. The researchers randomly selected 10 public buildings in Chicago that had both a Coke machine, selling Coca-Cola Classic and New Coke, and a Pepsi machine. They recorded the number of cans sold over a given period of time. The purpose of the study was to compare the sales of Coca-Cola Classic, New Coke, and Pepsi in these public building vending machines.

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