A Researcher Wants to Determine the Efficacy of a Training

question 88

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)68
• B)69
• C)70
• D)71
• E)72

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Definitions:

Breastfeeding

The act of feeding a baby with milk directly from the mother's breast.

Nutrients

Substances needed for growth, metabolism, and for other body functions. They are obtained through diet.

Immunity

The body's ability to resist or defend against infection and disease through the immune response.

Undernutrition

A condition resulting from inadequate intake of nutrients, leading to various health issues such as weight loss and muscle wasting.