So.l Rev. Test 4

# So.l Rev. Test 4 - Problem 1(right tail test I U.S Plants...

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1 3.52% 2.02% 4.91% 3.22% 7.11% 6.06% 8.00% 6.87% 4.77% Japanese Plants U.S. Plants I.- 8 3 6 1 9 5 7 2 4 34 1 = T 11 2 = T 05 . 0 9 4 5 2 1 = = = = α n n n Nonparametric Test: Wilcoxon Rank Sum Test A. Ho: The population distribution of turnover rates of US Plants and Japanese Plants are identical Ha: The population Distribution of turnover rates of US Plants is shifted to the right of that of the Japanese Plants Test Statistics: Rejection Region: 13 2 2 T T T L 11 2 = = T T Decision: Reject Ho at α =0.05 Conclusion : There is enough evidence to conclude that the population distribution of turnover rates of US Plants is shifted to the right of that of Japanese Plants. B. Ho: The population distribution of turnover rates of US Plants and Japanese Plants are identical Ha: The population Distribution of turnover rates of US Plants is shifted either to the right or to the left of that of the Japanese Plants Test Statistics: Rejection Region: 28 12 T or T T T or T T U L 11 2 = = T T Decision: Reject Ho at α =0.05

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