ther treatment.) 7 Students in an introductory statistics class were asked how many brothers and sisters they have and whether their hometown is urban or rural. Number of Siblings in Rural versus Urban Areas Rural 321 12 1 3 2 2 2 2 5 1 4 1 1 1 1 6 2 2 2 1 1 Urban 101 1001 1 1 8 1 1 101 12 a Test for a significant difference between rural and urban areas using the Wilcoxon rank- sum test. b Test for a significant difference using the two-sample f-test, and compare the results with those obtained in part a. Why are the results different? Wil