A Medical Researcher Is Interested in Determining If There Is $$\chi ^ { 2 }$$

Multiple Choice

A medical researcher is interested in determining if there is a relationship between adults over 50 who walk regularly and low, moderate, and high blood pressure. A random sample of 236 adults over 50 is selected and
The results are given below. Calculate the chi-square test statistic χ $$\chi ^ { 2 }$$
to test the claim that walking and low,
Moderate, and high blood pressure are not related. $$\begin{array} { l | c c c } \text { Blood Pressure } & \text { Low } & \text { Moderate } & \text { High } \\\hline \text { Walkers } & 35 & 62 & 25 \\\text { Non-walkers } & 21 & 65 & 28\end{array}$$

A) 3.473
B) 16.183
C) 18.112
D) 6.003