A Market Researcher Is Interested in Determining Whether the Age

question 3

Multiple Choice

A market researcher is interested in determining whether the age of listeners influences their preferred musical styles.The following is a contingency table from a random sample of 385 individuals: $\begin{array}{c}\begin{array}{|l|}\hline\\\hline 18-25 \\\hline 26-35 \\\hline 36-45 \\\hline 46+ \\\hline \end{array}\begin{array}{l}\hline\text { Style } -{1}\\ \hline 125 \\\hline 87 \\\hline 50 \\\hline 12 \\\hline\end{array}\begin{array}{|l|}\hline \text { Style}-2 \\\hline 13 \\\hline 12 \\\hline 22 \\\hline 25 \\\hline \end{array}\begin{array}{l|}\hline\text { Style}-3 \\\hline 6 \\\hline 6 \\\hline 12 \\\hline 15\\\hline\end{array}\end{array}$


The researcher uses $\alpha$ = 0.05.The appropriate decision is ______.

• A)reject the null hypothesis and conclude the two variables are not independent
• B)reject the null hypothesis and conclude the two variables are independent
• C)do not reject the null hypothesis and conclude the two variables are not independent
• D)do not reject the null hypothesis and conclude the two variables are independent
• E)do nothing

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Definitions:

Central Nervous System

is a fundamental part of the neurosystem comprising the brain and spinal cord, responsible for processing and sending out information throughout the body.

Spinal Cord

is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the brainstem to the lumbar region of the spinal column, crucial for transmitting messages between the brain and the body.

Somatic Nervous System

A part of the peripheral nervous system that handles voluntary control of body movements through the control of skeletal muscles.

Knee-Jerk Reflex

The knee-jerk reflex is a sudden kicking movement of the lower leg in response to a sharp tap on the patellar tendon.