Choose the one alternative that best completes the statement or answers the question.
-Nine students took a standardized test. Their scores are listed below. Later on, they took a test preparation course and retook the test. Their new scores are listed below. Use the Wilcoxon signed-ranks test to find the test statistic T to test the hypothesis that the test preparation had no effect on their scores. Use $\alpha = 0.05$.
$\begin{array}{lccccccccr}
\hline \text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \
\hline \text { Before Score } 1200 & 810 & 1090 & 1070 & 1080 & 990 & 800 & 1100 & 820 \
\text { After Score } & 1220 & 810 & 1080 & 1110 & 1110 & 1000 & 790 & 1140 & 840
\end{array}$
A) 4
B) 32
C) 41
D) 2

Question

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The Answer of Choose the one alternative that best completes the statement or answers the question.
-Nine students took a standardized test. Their scores are listed below. Later on, they took a test preparation course and retook the test. Their new scores are listed below. Use the Wilcoxon signed-ranks test to find the test statistic T to test the hypothesis that the test preparation had no effect on their scores. Use $\alpha = 0.05$.
$\begin{array}{lccccccccr}
\hline \text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \
\hline \text { Before Score } 1200 & 810 & 1090 & 1070 & 1080 & 990 & 800 & 1100 & 820 \
\text { After Score } & 1220 & 810 & 1080 & 1110 & 1110 & 1000 & 790 & 1140 & 840
\end{array}$
A) 4
B) 32
C) 41
D) 2

Choose the One Alternative That Best Completes the Statement or Answers