Use the Sign Test to Test the Indicated Claim

question 61

Essay

Use the sign test to test the indicated claim. An instructor gives a test before and after a lesson
and results from randomly selected students are given below. At the 0.05 level of significance,
test the claim that the lesson has no effect on the grade. Use the sign test. $$\begin{array} { l l l l l l l l l l l l l l l l } \text { Before } & 54 & 61 & 56 & 41 & 38 & 57 & 42 & 71 & 88 & 42 & 36 & 23 & 22 & 46 & 51 \\\hline \text { After } & 82 & 87 & 84 & 76 & 79 & 87 & 42 & 97 & 99 & 74 & 85 & 96 & 69 & 84 & 79\end{array}$$

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Definitions:

Task Performance

The execution and completion of specific duties or responsibilities associated with one's role or job.

Goal-Directed Activities

Actions deliberately undertaken to achieve specific outcomes or objectives.

Organizational Citizenship Behaviors

Actions by employees that are beyond their formal job requirements but significantly contribute to the positive functioning of the organization.

Conscientiousness

One of the five major personality traits, indicating a person's tendency to be organized, responsible, and hardworking.