Determine the Appropriate Hypothesis Test to Perform
-The Data Represent $\alpha = 0.01$

Determine the Appropriate Hypothesis Test to Perform
-The data represent the measure of a variable before and after a treatment. Does the sample evidence suggest that the treatment is effective in increasing the value of the response variable? Use the $\alpha = 0.01$ level of significance. Assume that the differenced data come from a population that is normally distributed with no outliers.
$\begin{array}{r|ccccccc}\text { Subject } & \text { A } & \text { B } & C & \text { D } & \text { E } & \text { F } & \text { G } \\\hline \text { Before, } X_{i} & 9.4 & 9.7 & 9.4 & 9.5 & 9.7 & 9.5 & 9.7 \\\hline \text { After, } \mathrm{Y}_{\mathrm{i}} & 9.5 & 9.9 & 9.4 & 9.4 & 9.8 & 9.8 & 9.5\end{array}$