Perform a Test for Independence
-A medical researcher is interested in determining if there is a relationship between adults over 50 who exercise regularly and low, moderate, and high blood pressure. A random sample of 236 adults over 50 is selected and the results are given below. Test the claim that regular exercise and low, moderate, and high blood pressure are independent. Use $\alpha = 0.01$.
$\begin{array}{l|ccc}
\text { Blood Pressure } & \text { Low } & \text { Moderate } & \text { High } \
\hline \text { Reg. Exercise } & 35 & 62 & 25 \
\text { No Reg. Exercise } & 21 & 65 & 28
\end{array}$

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The Answer of Perform a Test for Independence
-A medical researcher is interested in determining if there is a relationship between adults over 50 who exercise regularly and low, moderate, and high blood pressure. A random sample of 236 adults over 50 is selected and the results are given below. Test the claim that regular exercise and low, moderate, and high blood pressure are independent. Use $\alpha = 0.01$.
$\begin{array}{l|ccc}
\text { Blood Pressure } & \text { Low } & \text { Moderate } & \text { High } \
\hline \text { Reg. Exercise } & 35 & 62 & 25 \
\text { No Reg. Exercise } & 21 & 65 & 28
\end{array}$

Perform a Test for Independence -A Medical Researcher Is Interested α=0.01\alpha = 0.01α=0.01

Perform a Test for Independence
-A Medical Researcher Is Interested $\alpha = 0.01$