Suppose that a random sample of 513 individuals were randomly sampled and information was collected about the method a subject used to make an airline reservation (last reservation for either business or pleasure) and the subject's gender. Test the null hypothesis of no association between these two characteristics. The data are summarized as follows:
Answer to relevant QuestionsIn a recent market survey, five different soft drinks were tested to determine if consumers have a preference for any of the soft drinks. Each person was asked to indicate her favorite drink. The results were as follows: ...In the study of Example 15.1, independent random samples of six advertisements from True Confessions, People Weekly, and Newsweek were taken. The fog indices for these advertisements are given in the accompanying table. Test ...Using the data of Exercise 15.5, perform a Kruskal Wallis test of the null hypothesis that the population mean test scores are the same for students assigned to the four teaching assistants. In exercise Independent random samples of 101 college sophomores, 112 college juniors, and 96 college seniors were asked to rate, on a scale of 1 to 7, the importance attached to brand name when purchasing a car. The obtained value of ...An instructor in an economics class is considering three different texts. He is also considering three types of examinations-multiple choice, essay, and a mix of multiple choice and essay questions. During the year he ...
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