1-20chapter stats

Distribution of cholesterol level is not normally

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 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 less than the median value of the second sample. 1-1771 Chapter 01 - An Introduction to Business Statistics 44. Refer to the Mega-Stat/Excel output for the Wilcoxon signed rank test given in the table below. At a significance level of .01, which one of the following statements is correct regarding the following null hypothesis? H0: D1 is shifted to the left of D2 A. We reject H0 and conclude there is not sufficient evidence that the probability distribution of population 1 is shifted to the left of the probability distribution of population 2. B. We failed to reject H0 and conclude there is not sufficient evidence that the probability distribution of population 1 is shifted to the left of the probability distribution of population 2. C. We reject H0 and conclude there is very strong evidence that the probability distribution of population 1 is shifted to the left of the probability distribution of population 2. D. We failed to reject H0 and conclude there is very strong evidence that the probability distribution of population 1 is shifted to the left or to the right of the probability distribution of population 2. E. We failed to reject H0 and conclude there is very strong evidence that the probability distribution of population 1 is identical to the probability distribution of population 2. 1-1772 Chapter 01 - An Introduction to Business Statistics 45. Refer to the Mega - Stat/Excel output for the Wilcoxon signed rank test given in the table below. At a significance level of .01, which one of the following rejection point conditions is correct regarding the following null hypothesis? H0: D1 is shifted to the left of D2 A. T- ≤ 5 B. T+ ≤ 5 C. T- ≤ 11 D. T- ≤ 3 E. Smaller of the T+ or T- is less than 8 1-1773 Chapter 01 - An Introduction to Business Statistics 46. 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, which one of the following statements is correct regarding the following null hypothesis? H0: The four populations under consideration have identical locations A. We reject H0 and conclude there is very strong evidence that the median hospital CFO salaries differ among all four regions in the United States. B. We failed to reject H0 and conclude there is not sufficient evidence that the median hospital CFO salaries differ among any of the four regions of the United States. C. We failed to reject H0 and conclude there 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. 1-1774 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 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 1-1775 Chapter 01 - An Introduction to Business Statistics 49. A ______ test is a statistical test that can be used without ass...
View Full Document

Ask a homework question - tutors are online