COMMERCE 2QA3 Lecture 17: 17___
17 Dec 2015
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Answer: wilcoxon rank-sum / mann-whitney statistic, yes. We can assume that the data values are mutually independent (independence. Assumption) and the two groups are independent (independent groups assumption): h0: the government and university economists have the same typical opinion. Ha: the government and university economists have different typical opinions. d. Critical values from the table are tl = 30 and tu = 54. Therefore we reject the null hypothesis and conclude that the two groups of economists do not have the same typical opinion about the economic stimulus bill. 1: consumers were asked to rate the taste of three popular brands of yogurt that have been modified to include fibre. The data are shown in the table below. If these data did satisfy the assumptions for performing anova, what are the disadvantages: h0: all three brands have the same distribution of customer rating. Ha: at least one brand has a different distribution from the others. c.
