COMMERCE 2QA3 Lecture 16: 16___
17 Dec 2015
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Short answer - quiz a: vending machines on a college campus offer a variety of drinks. 149: state appropriate hypotheses to test whether the purchasing agent is correct, what is the value of the test statistic and its associated p-value, state the conclusion at = 0. 05. Answer: h0: the types of drinks are uniformly distributed (equally preferred) among the students buying drinks. Ha: the types of drinks are not uniformly distributed (equally preferred) among the students buying drinks: assuming that the null hypothesis is true, the expected frequencies are equal across the four drinks. Therefore, the expected frequencies are all (0. 25) (680) = 170. P-value = 0. 0458: the p-value is low (less than ), so we reject the null hypothesis. These data show evidence that the drink options are not equally preferred by the students. Answer: kiwi strawberry has the highest standardized residual (2. 15) and its 2 component was.
