A Researcher Wants to Determine the Efficacy of a Training

question 13

Multiple Choice

A researcher wants to determine the efficacy of a training program directed at improving concentration, focus, and memory on college students.She selects a random sample of 16 individuals and has them take an initial assessment test before the training program.Then the individuals complete the training program, and at the end they take a final test that's comparable to the initial test.The results are shown in the following table: $$\begin{array} { | c | c | c | } \hline \text { Individ. } & \text { Before } & \text { After } \\\hline 1 & 79 & 81 \\\hline 2 & 74 & 73 \\\hline 3 & 81 & 82.5 \\\hline 4 & 75 & 82.5 \\\hline 5 & 72.5 & 85 \\\hline 6 & 75 & 90 \\\hline 7 & 67.5 & 83.5 \\\hline 8 & 57.5 & 72.5 \\\hline 9 & 62.5 & 87.5 \\\hline 10 & 77.5 & 80 \\\hline 11 & 61.5 & 92.5 \\\hline 12 & 57.5 & 80 \\\hline 13 & 61.5 & 71 \\\hline 14 & 72.5 & 84 \\\hline 15 & 64 & 78.5 \\\hline 16 & 71 & 97.5 \\\hline\end{array}$$ The analyst uses a Wilcoxon matched-pairs signed rank test with a 0.05 significance level.The value of $\mu$ _T is ______.

• A)17.257
• B)19.339
• C)21.257
• D)23.339
• E)25.257

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Definitions:

Direct Investment

A financial investment in a business by purchasing ownership directly in the company, often implying a long-term commitment.

International Business

Commercial transactions that occur across national borders, including trade, investments, and other business activities.

Market Entry Strategies

Approaches employed by companies to enter new markets, including export, joint venture, franchising, and direct investment.

Neutral Versus Affective

A distinction in communication styles or cultural norms, where 'neutral' implies limited outward emotional expression, and 'affective' involves expressive communication and behavior.