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:

Materials Requisitions

Requests for the supply of materials necessary for production or operational purposes within an organization.

Storeroom

A room or space used for the storage of goods or supplies, typically in a business or retail setting.

Underapplied Factory Overhead

The amount of actual factory overhead in excess of the factory overhead applied to production during a period.

Cost of Goods Sold

The direct costs attributable to the production of the goods sold by a company, including material, labor, and overhead expenses.