Refer to Data Set 9 in Appendix B. Use a 0.01 significance level to test the claim

Question:

Refer to Data Set 9 in Appendix B. Use a 0.01 significance level to test the claim that the population of cotinine levels is the same for these two groups: Nonsmokers who are not exposed to environmental tobacco smoke (labeled as NOETS), and nonsmokers who are exposed to tobacco smoke (labeled as ETS). What do the results suggest about "second-hand" smoke?
Use the Wilcoxon rank-sum test.