How do the average weekly incomes of lawyers and architects compare? A random sample of 18 regions in the United States gave the following information about average weekly incomes (in dollars). (Reference: U.S. Department of Labor, Bureau of Labor Statistics.) Region 1 2 3 4 5 6 7 8 9 Lawyers 705 897 849 1045 1327 1166 1122 865 1032 Architects 853 935 886 1108 1374 1296 1033 861 1011 Region 10 11 12 13 14 15 16 17 18 Lawyers 712 833 1194 995 1131 928 1395 879 1143 Architects 792 909 1153 1035 1196 934 1129 918 1179 Does this information indicate that architects tend to have a larger average weekly income? Use α = 0.05. (a) What is the level of significance? (b) Compute the sample test statistic. (Use 2 decimal places.) (c) Find the P-value of the sample test statistic. (Use 4 decimal places.)

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