A Market Researcher Is Interested in Determining Whether the Age

question 43

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 number of degrees of freedom is ______.

• A)12
• B)11
• C)10
• D)9
• E)6

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