When the sample size n is greater than 30, the Spearman rank correlation coefficient $r _ { s }$ is approximately normally distributed with: $\begin{array}{|l|l|}
\hline\text { A. } & \text { mean 0 and standard deviation 1 .}\
\hline \text { B. } & \text { mean 1 and standard deviation $ \sqrt{n-1} $.} \
\hline \text { C. } &\text {mean 1 and standard deviation $ 1 / \sqrt{n-1} $. }\
\hline \text { D. } &\text {mean 0 and standard deviation $ 1 / \sqrt{n-1} $. }\
\hline
\end{array}$

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The Answer of When the sample size n is greater than 30, the Spearman rank correlation coefficient $r _ { s }$ is approximately normally distributed with: $\begin{array}{|l|l|}
\hline\text { A. } & \text { mean 0 and standard deviation 1 .}\
\hline \text { B. } & \text { mean 1 and standard deviation $ \sqrt{n-1} $.} \
\hline \text { C. } &\text {mean 1 and standard deviation $ 1 / \sqrt{n-1} $. }\
\hline \text { D. } &\text {mean 0 and standard deviation $ 1 / \sqrt{n-1} $. }\
\hline
\end{array}$

When the Sample Size N Is Greater Than 30, the Spearman