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:

Mental Demands

The cognitive and psychological efforts required by a job, including concentration, decision-making, memory, and problem-solving capabilities.

Ergonomic Challenge

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Physical Strain

Stress or pressure applied to the body, often leading to fatigue or injury.

Information-Processing Requirements

The specific needs related to the collection, processing, and storage of data in an organization, influencing its informational systems design.