Exhibit 7-6: a Group of Researchers Hypothesizes That Listening to Music

question 110

Multiple Choice

Exhibit 7-6: A group of researchers hypothesizes that listening to music while studying for an exam influences test scores.They randomly selected 28 subjects and divided them into four groups.All groups studied silently for a test for an hour a day for a week.Group 1 studied without music.Group 2 studied with classical music in the background, Group 3 with country, and Group 4 with jazz.The following are the final test scores:
$\begin{array}{l}\begin{array}{lll}\text { Group 1 } & \text { Group 2 } \\50 & 59 \\45 & 57 \\42 & 57 \\41 & 55 \\40 & 56 \\39 & 53 \\38 & 51\end{array}\begin{array}{lll}\text { Group 3} & \text { Group 4 } \\60 & 49 \\56 & 45 \\56 & 45 \\55 & 42 \\54 & 41 \\51 & 39 \\50 & 37\end{array}\end{array}$

-Refer to Exhibit 7-6.The test is statistically significant at what level?

• A) .05.
• B) .01
• C) It is not significant.

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Definitions:

Work Arrangements

The structures and patterns of work, including hours, location, and contractual terms.

Planning

The process of setting goals, defining strategies, and outlining tasks and actions to achieve those goals.

Active Participation

Engagement in an activity or process with full involvement and contribution, rather than remaining passive or disengaged.

Evaluated

The process of examining something systematically to determine its merit, value, or significance based on established criteria.