Suppose That Six Different E-Readers Were Evaluated by Two Senior

Suppose that six different e-readers were evaluated by two senior citizen groups
With respect to their suitability for use among the older segment of the population. The
Rankings from 1 (best) to 6 (worst) are shown below. Using the appropriate
Nonparametric method, the value of the calculated test statistic to determine if there is a
Difference in the rankings between the two magazines is $$\begin{array} { | c | c | c | } \hline \text { Model } & \text { Group 1 } & \text { Group 2 } \\\hline \text { Kindle 3 } & 1 & 1 \\\hline \text { Sony Reader } & 2 & 3 \\\hline \text { Kindle DX } & 3 & 2 \\\hline \text { Alex } & 4 & 6 \\\hline \text { Kobo eReader } & 5 & 4 \\\hline \text { COOL-ER } & 6 & 5 \\\hline\end{array}$$

A) 2.5
B) 3
C) 5.5
D) 7.5
E) 10