Use the Wilcoxon Rank-Sum Test to Test the Claim That

Essay

Use the Wilcoxon rank-sum test to test the claim that the two independent samples come from_
populations with equal medians. SAT scores for students selected randomly from two different
schools are shown below. Use a significance level of 0.05 to test the claim that the scores for
the two schools are from populations with the same median. $$\begin{array} { c c c | c c c } & { \text { School A } } & & { \text { School B } } \\\hline 550 & 480 & 670 & 460 & 580 & 620 \\400 & 700 & 520 & 380 & 680 & 570 \\540 & 740 & 560 & 660 & 500 & 480 \\360 & 560 & 650 & 600 & 550 &\end{array}$$