Consider the following two samples:
a. Show that both samples have the same mean and variance.
b. Use the Wilcoxon rank-sum test to test the null hypothesis that the population means are equal. What do you conclude?
c. Do the assumptions of the rank-sum test appear to be satisfied? Explain why or why not.
US History Since 1877 T est 2 02/16/2016 ▯ Cyrus McCormick “the Farmer’s Movement” o farmers had moved from sustenance agriculture to commercial farming driven by the demand of the citied helped by the railroads machines were replacing workers o became most productive agriculture industry in history ▯ 1890s- farmers were becoming unhappy because prices were dropping ▯ ▯ Olive H. Kelly “The Grange” o farmers banding together o Purposes: 1. Social and cultural 2. Knowledge