Pepsi Coke Challenge Lab Report

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ABSTRACT: A blind taste test is used as a tool for companies to see how they can improve their product. My Biology 141 class challenged people to do the Pepsi/Coke challenge to see if they were cable in distinguishing between Cola products Pepsi and Coke even if they had recently brushed their teeth or not. There were two hypotheses to test. The first one being that there is a difference between brushing your teeth and not brushing your teeth, within the last thirty minutes, in their ability to distinguish between Pepsi and Coke. The second one was that there is no difference between brushing your teeth and not brushing your teeth, within the last thirty minutes, in their ability to distinguish between Pepsi and Coke. After doing the test and performing the necessary calculations on the chi-squared test, I found out that a greater amount of people who brushed were able to correctly identify the cola products. INTRODUCTION: If you were given a blind taste test and asked to distinguish between two products, how confident do you think you are in telling the products apart? In my Biology 141 class, we did the Pepsi/Coke Challenge and that challenge was simply about giving individuals a blind taste test, and asking them to distinguish between Pepsi and Coke. There are many reasons why reasons people perform blind test. These test can be sent, smell, feel or taste. In marketing, a blind taste test is used as a tool for companies to see how they can improve their product. It is also used as a tool for companies to develop their brand. For example, many restaurants select random people to taste their food, so that they would know which dish needs more improvement. The results of these tests are not always the same. This is because there are some people who may use those products very frequently, so they are more likely to tell the difference between the two products. On the other hand there are those people rarely use the product, so they will have a harder time distinguishing between the product and they are more likely to get it wrong. Then there are those people who are stuck between the two extremes who uses the product often enough, but they are unsure. However, I know that brushing your teeth and drinking or eating right after causes whatever you are eating or drinking to taste funny. Knowing this, the question I ask is, “Is there a difference between brushing your teeth and not brushing your teeth, within the last thirty minutes, affect their ability to distinguish between the Cola products Pepsi and Coke?” H1: There is a difference between brushing your teeth and not brushing your teeth, within the last thirty minutes, in their ability to distinguish between Pepsi and Coke. H2: There is no difference between brushing your teeth and not brushing your teeth, within the last thirty minutes, in their ability to distinguish between Pepsi and Coke.

If there is a difference between brushing your teeth and not brushing your teeth, within the last thirty minutes, in their ability to distinguish between Pepsi and Coke, then there will be a difference in the percent that each group correctly identifies the cola’s in a blind test. METHODS: In order to get accurate results in our Pepsi/Coke Challenge blind test, the Biology 141 class disguised each can by wrapping aluminum foil over the entire can. We then decided to only ask fifteen students who attend the University of the Virgin Island on St. Thomas campus to participate in our challenge. Before leaving the lab, the class was split into two groups, Comparison or Single Cola (which was Pepsi). The Comparison group gathered thirty cups, so that the participants wouldn’t reuse the same cup and alter the taste by mixing the two products, fifteen questionnaire forms, an ice bag, ice three Coke cans and three Pepsi cans. The Single Cola group gathered fifteen cups, fifteen questionnaire forms, an ice bag, ice, and three Pepsi cans. We placed the cans that weren’t being...
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