In a Wilcoxon Signed Rank Sum Test for Matched Pairs

Short Answer

In a Wilcoxon signed rank sum test for matched pairs with n = 35, the rank sums of the positive and negative differences are 380 and 225, respectively. The value of the standardised test statistic z is: $\begin{array} { | l | l | } \hline \text { A. } & 1.689 . \\\hline \text { B. } & 1.065 . \\\hline \text { C. } & 1.206 . \\\hline \text { D. } & 1.400. \\\hline\end{array}$