Consider again. Suppose that a researcher wants to know if the severity of mental health symptoms is different for rural and urban adolescents. (a) Does the information give us enough information to...

Consider again. Suppose that a researcher wants to know if the

severity of mental health symptoms is different for rural and urban adolescents.

(a) Does the information give us enough information to test the

null hypothesis that the mean ranks of severity are the same for rural and urban

adolescents? Why or why not?

(b) Use the Wilcoxon rank sum test to test the null hypothesis that the mean ranks

of severity are the same for rural and urban adolescents. Use á = 0.05.

(c) How is the hypothesis tested in (b) different than the hypothesis tested in 12.6

(b)?