Nine students took the SAT test. Later, they took a test preparation course and retook the SAT. Their original scores and new scores are shown below. Use the Wilcoxon signed rank test to test the claim that the test preparation had an effect on their scores. $\text { Use } \alpha = 0.05 \text {. }$ $$\begin{array} { l c c c c c c c c c }
\hline \text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \
\hline \text { Before Score } 930 & 810 & 900 & 870 & 1120 & 910 & 940 & 980 & 1080 \
\text { After Score } & 950 & 810 & 890 & 910 & 1150 & 920 & 930 & 1020 & 1100 \
\hline
\end{array}$$

Question

Nine students took the SAT test. Later, they took a test preparation course and retook the SAT. Their original scores and new scores are shown below. Use the Wilcoxon signed rank test to test the claim that the test preparation had an effect on their scores. $\text { Use } \alpha = 0.05 \text {. }$ $$\begin{array} { l c c c c c c c c c } 
\hline \text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \
\hline \text { Before Score } 930 & 810 & 900 & 870 & 1120 & 910 & 940 & 980 & 1080 \
\text { After Score } & 950 & 810 & 890 & 910 & 1150 & 920 & 930 & 1020 & 1100 \
\hline
\end{array}$$

Quizplus · Accepted Answer

The Answer of Nine students took the SAT test. Later, they took a test preparation course and retook the SAT. Their original scores and new scores are shown below. Use the Wilcoxon signed rank test to test the claim that the test preparation had an effect on their scores. $\text { Use } \alpha = 0.05 \text {. }$ $$\begin{array} { l c c c c c c c c c } 
\hline \text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \
\hline \text { Before Score } 930 & 810 & 900 & 870 & 1120 & 910 & 940 & 980 & 1080 \
\text { After Score } & 950 & 810 & 890 & 910 & 1150 & 920 & 930 & 1020 & 1100 \
\hline
\end{array}$$

Nine Students Took the SAT Test Use α=0.05. \text { Use } \alpha = 0.05 \text {. } Use α=0.05.

Nine Students Took the SAT Test $\text { Use } \alpha = 0.05 \text {. }$