1-20chapter stats

E we failed to reject h0 and conclude there is very

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Unformatted text preview: e is only adequate evidence that the median hospital CFO salaries differ between at least two of the four regions in the United States. D. We reject H0 and conclude there is strong evidence that the median hospital CFO salaries differ between at least two of the four regions in the United States. E. We failed to reject H0 and conclude that all 4 populations under consideration are identical in their locations. AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Hard Learning Objective: 4 Topic: Kruskal-Wallis 1-1822 Chapter 01 - An Introduction to Business Statistics 47. A professional organization is attempting to determine whether salaries of hospital CFOs differ by geographical region. Five hospital CFOs were randomly selected from each of the following four regions of the United States: East, Midwest, South, and West. Each CFO was than asked his or her annual salary. The distributions of salaries were highly skewed. The table below summarizes the results of the Kruskal-Wallis test obtained from Mega-Stat/Excel. At a significance level of .05, the rejection point condition for the hypothesis test is: A. Reject H0 if χ2 > 9.3484 B. Reject H0 if χ2 > 30.1435 C. Reject H0 if χ2 > 7.81473 D. Reject H0 if χ2 > .341846 E. Reject H0 if χ2 > 32.8523 AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Learning Objective: 4 Topic: Kruskal-Wallis 1-1823 Chapter 01 - An Introduction to Business Statistics 48. In a local iceskating contest, there were 2 judges and 15 contestants. Each judge was asked to rate each contestant on a 7-point scale. The most successful candidates received a rating value of 7, while the least successful candidates received a rating value of 1. It appeared that the bivariate normal probability distribution assumption is severely violated. The City Council wants to know whether the judges have similar opinions in rating ice skating competitors. At a significance level of .01, the rejection point condition for the hypothesis test is: A. Reject H0 if rs > .457 B. Reject H0 if rs > .623 C. Reject H0 if rs > .441 D. Reject H0 if rs > .646 E. Reject H0 if rs > .689 AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Hard Learning Objective: 4 Topic: Kruskal-Wallis 49. A ______ test is a statistical test that can be used without assuming that the sampled population(s) have a particular type of probability distribution. A. Wilcox Rank Sum B. Nonparametric C. Linear regression D. Correlation AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 1 Topic: Rank Sum 1-1824 Chapter 01 - An Introduction to Business Statistics 50. The __________________ test is a nonparametric counterpart of a small sample t test for comparing two independent population locations. A. Wilcoxon Rank Sum B. Kruskal-Wallis C. Wilcoxon signed rank D. Sign Test AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 2 Topic: Rank Sum 51. The __________________ test is a nonparametric counterpart of a one way ANOVA F test. A. Wilcoxon Rank Sum B. Kruskal-Wallis C. Wilcoxon signed rank D. Sign Test AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 4 Topic: Kruskal-Wallis 52. In a Wilcoxon Rank Sum Test, when two or more observations are equal, we assign to each tied observation a rank equal to the ______ of the consecutive ranks. A. average B. median C. sum D. difference AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 2 Topic: Rank Sum 1-1825 Chapter 01 - An Introduction to Business Statistics 53. The Wilcoxon rank sum test is used to compares the locations of two _____________ populations. A. dependent B. normal C. independent D. similar AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Hard Learning Objective: 2 Topic: Rank Sum 54. The ______________ test is a nonparametric method that requires data consisting of matched pairs. A. Wilcoxon Rank Sum B. Kruskal-Wallis C. Wilcoxon signed rank D. Sign Test AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 3 Topic: Wilcoxon signed rank 55. If the population from which we sample is highly skewed to the right or to the left, then the population _________ might be a better measure of central tendency than the population mean. A. median B. variance C. mode D. average AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 1 Topic: Nonparametric methods 1-1826 Chapter 01 - An Introduction to Business Statistics 56. When a large sample is taken, _______________ approximation to the binomial distribution can be used to implement the sign test. A. Chi-square B. normal C. correlation coefficient D. Rank sum AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Easy Learning Objective: 1 Topic: Nonparametric methods 57. In order to perform the ________________ test, all of the observations in two samples are combined into a single...
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