Refer to the Journal of Business Logistics (Vol. 36, 2015) study of the factors that lead to successful performance-based logistics projects, Exercise 15.14. Data on years of experience for 6 Department of Defense (DoD) commercial suppliers and 11 DoD government employees are reproduced in the table (next column). In Exercise 8.15, you used

These data and a two-sample t-test to determine whether commercial suppliers of the DoD have less experience than government employees. Now apply the appropriate nonparametric test to compare the two experience distributions. Test using α = .05. What do you conclude? Explain why the nonparametric test may be more appropriate for these data?

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Commercial: 30 10 9 10 5 10 Government: 15 30 30 25 6 3 20 25 30 20 25