Determine Whether the Samples Are Independent or Dependent

Determine whether the samples are independent or dependent.
-A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure,
measured in mm Hg, by following a particular diet. Use a significance level of 0.01 to test the claim that the
treatment group is from a population with a smaller mean than the control group. Use the traditional method of
hypothesis testing. $$\begin{array} { | c l | } \hline \text { Treatment Group } & \text { Control Group } \\ \mathrm { n } _ { 1 } = 101 & \mathrm { n } _ { 2 } = 105 \\\overline { \mathrm { x } } _ { 1 } = 120.5 & \overline { \mathrm { x } } _ { 2 } = 149.3 \\\mathrm {~s} _ { 1 } = 17.4 & \mathrm {~s} _ { 2 } = 30.2 \\\hline\end{array}$$