Verbal SAT Scores for Students Randomly Selected from Two Different

Essay

Verbal SAT scores for students randomly selected from two different schools are listed below. Use the Wilcoxon rank sum procedure to test the claim that there is no difference in the scores from each school. Use α = .05. $\begin{array}{lll|lll}\text { School 1 } &&&& \text { School 2 }\\\hline 530 & 500 & 750 & 470 & 420 & 660 \\460 & 730 & 510 & 410 & 690 & 570 \\560 & 760 & 590 & 670 & 530 & 510 \\570 & 710 & 730 & 610 & 620 & 520\end{array}$