A marketing manager for Nike purchased a 30 second time slot during the Super Bowl for advertising its new line of running clothes. The manager wants to determine if the commercial should be informative or funny. She pays for one informative and one funny commercial to be created. She recruits a sample of 100 volunteers and randomly assigns them to watch one of the two commercials and rates their interest in purchasing the clothes. Here are the results: Opinion

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.