Data Set 15-1: the Scores Below Are Ranks $$\begin{array} { c c } \text { Group 1 } & \text { Group 2 } \\\hline 1 & 3 \\2 & 4\end{array}$$

Multiple Choice

Data Set 15-1: The scores below are ranks. They were obtained by taking each raw score and giving it a rank of 1 to 4.
$$\begin{array} { c c } \text { Group 1 } & \text { Group 2 } \\\hline 1 & 3 \\2 & 4\end{array}$$
-Refer to Data Set 15-1. The rationale of nonparametric tests says that if the null hypothesis is true,

A) the mean score of the population from which Group 1 comes will be equal to that ofGroup 2
B) the mean score of the population from which Group 1 comes will not be equal to that ofGroup 2
C) the sum of the ranks of those in Group 1 will be equal to the sum of those in Group 2
D) the sum of the ranks of those in Group 1 will not be equal to the sum of those in Group 2.