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# F test for equality of population variances aacsb

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Unformatted text preview: test C. Sign test D. Kruskal-Wallis test E. Spearman's rank correlation test AACSB: Reflective Thinking Bloom's: Evaluation Difficulty: Medium Learning Objective: 3 Topic: Signed rank test 1-1811 Chapter 01 - An Introduction to Business Statistics 33. Two NFL scouts are in the process of recruiting 7 college senior football players (receivers). After a careful review and evaluation, both scouts ranked the seven receivers in terms of their professional career prospects. If we want to determine whether the two scouts have similar opinions about the professional football career prospects of the seven players, which one of the following nonparametric tests would be chosen? A. Wilcoxon signed rank test B. Wilcoxon rank sum test C. Sign test D. Kruskal-Wallis test E. Spearman's rank correlation test AACSB: Reflective Thinking Bloom's: Evaluation Difficulty: Medium Learning Objective: 5 Topic: Rank correlation coefficient 34. In a manufacturing facility producing fasteners, a foreman suspects that the diameter of the bolt produced by his second shift workers is greater than the diameter of the bolts produced by his first shift workers. He takes a sample of 5 bolts from the first shift and a sample of 4 bolts from the second shift and measures the diameters in inches. Distribution of bolt diameter measurements is not normally distributed. Which one of the following nonparametric tests is appropriate for this problem? A. Wilcoxon signed rank test B. Wilcoxon rank sum test C. Sign test D. Kruskal-Wallis test E. Spearman's rank correlation test AACSB: Reflective Thinking Bloom's: Evaluation Difficulty: Medium Learning Objective: 2 Topic: Rank Sum 1-1812 Chapter 01 - An Introduction to Business Statistics 35. The __________________ is a general test to detect whether the probability distribution of one population has shifted to the right or to the left of the probability distribution of another population. A. Sign test B. Wilcoxon rank sum test C. Wilcoxon signed rank test D. Kruskal-Wallis test AACSB: Reflective Thinking Bloom's: Evaluation Difficulty: Medium Learning Objective: 2 Topic: Rank Sum 36. Assume that the following data set is not normally distributed. (21, 18, 4, 9, 14, 16, 17, 12, 15, 8, 7, 5) If Ha: Md < 6, then the value of S is: A. 0 B. 1 C. 2 D. 3 E. 4 AACSB: Analytic Skills Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Sign Test 1-1813 Chapter 01 - An Introduction to Business Statistics 37. Assume that the following data set is not normally distributed. (21, 18, 4, 9, 14, 16, 17, 12, 15, 8, 7, 5) If Ha: Md > 6, then the p-value is: A. .0161 B. .0029 C. .0537 D. .0322 E. .0192 AACSB: Analytic Skills Bloom's: Comprehension Difficulty: Hard Learning Objective: 1 Topic: Sign Test 38. Assume that the following data set is not normally distributed. (21, 18, 4, 9, 14, 16, 17, 12, 15, 8, 7, 5) If Ha: Md ≠ 7, then the p-value is: A. .0161 B. .0029 C. .0384 D. .0322 E. .0192 AACSB: Analytic Skills Bloom's: Comprehension Difficulty: Hard Learning Objective: 1 Topic: Sign Test 1-1814 Chapter 01 - An Introduction to Business Statistics 39. Assume that the following data set is not normally distributed. (21, 18, 4, 9, 14, 16, 17, 12, 15, 8, 7, 5) If Ha: Md < 16, then the p-value is: A. .0161 B. .0729 C. .0192 D. .0384 E. .1458 AACSB: Analytic Skills Bloom's: Comprehension Difficulty: Hard Learning Objective: 1 Topic: Sign Test 1-1815 Chapter 01 - An Introduction to Business Statistics 40. Refer to the Mega-Stat/Excel output for the Wilcoxon rank sum test given in the table below. At a significance level of .05, which one of the following statements is correct regarding the following null hypothesis? H0: D1 is shifted to the right or left of D2 A. We reject H0 and conclude there is very strong evidence that the median value of the first sample significantly differs from the median value of the second sample. B. We reject H0 and conclude there is very strong evidence that the median value of the first sample is significantly less than the median value of the second sample. C. We failed to reject H0 and conclude there is not sufficient evidence that the median value of the first sample is significantly less than the median value of the second sample. D. We failed to reject H0 and conclude there is not sufficient evidence to conclude that the median value of the first sample is not significantly different than the median value of the second sample. E. We failed to reject H0 and conclude there is very strong evidence that the median value of the first sample is significantly greater than the median value of the second sample. AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Learning Objective: 2 Topic: Rank Sum 1-1816 Chapter 01 - An Introduction to Business Statistics 41. Refer to the Mega-Stat/Excel output for the Wilcoxon rank sum test given in the table below. At a significance level of .05, which one of the following rejection point conditions is correct regarding the following n...
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