Test Hypotheses Regarding Matched-Pairs Data
-Nine Students Took the SAT $\alpha = 0.05$

Test Hypotheses Regarding Matched-Pairs Data
-Nine students took the SAT. Their scores are listed below. Later on, they read a book on test preparation and retook the SAT. Their new scores are listed below. Test the claim that the book had no effect on their scores. Use $\alpha = 0.05$ . Assume that the distribution is normally distributed.
$\begin{array}{l|ccccccccc}\text { Student } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \\\hline \text { Scores before reading book } & 720 & 860 & 850 & 880 & 860 & 710 & 850 & 1200 & 950 \\\hline \text { Scores after reading book } & 740 & 860 & 840 & 920 & 890 & 720 & 840 & 1240 & 970\end{array}$