A Medical Researcher Is Interested in Determining If There Is $$\chi _ { 0 } ^ { 2 }$$

question 5

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. Find the critical value χ $$\chi _ { 0 } ^ { 2 }$$
to test the claim that walking and low, moderate, and
High blood pressure are not related. Use $$\alpha$$ = 0.01. $$\begin{array} { l | c c c } \text { Blood Pressure } & \text { Low } & \text { Moderate } & \text { High } \\\hline \text { Walkers } & 35 & 62 & 25 \\\text { Non-walkers } & 21 & 65 & 28\end{array}$$

• A)9.210
• B)9.348
• C)6.251
• D)0.584

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Definitions:

Neural Connections

describe the links between neurons in the brain or nervous system, facilitating the transmission of signals and the processing of information.

Neurotransmitters

Chemical substances that transmit signals across a synapse from one neuron to another in the nervous system.

Chemical Messages

Signaling molecules released by cells that affect the behavior or development of other cells, often acting as hormones or neurotransmitters.

Synapses

The junctions through which neurons signal to each other or to non-neuronal cells, allowing for communication within the brain and the nervous system.