An English Instructor Gave a Final Exam and Found a Mean

question 70

Multiple Choice

An English instructor gave a final exam and found a mean score of 69 points and a standard deviation of 5.8 points.Assume that a Normal model can be applied.Draw and label the Normal model for the exam scores.Then find the interval for the central 68% of the scores.

• A) ;57.4 to 80.6 points
• B) ;63.2 to 74.8 points
• C) ;63.2 to 74.8 points
• D) ;57.4 to 69 points
• E) ;69 to 80.6 points

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Definitions:

Industrial/Organizational Psychologists

Psychologists specializing in the application of psychological principles and techniques to workplace environments, issues, and behaviors.

Behavior Modification

A treatment approach, based on the principles of operant conditioning, that replaces undesirable behaviors with more desirable ones through positive or negative reinforcement.

Yerkes-Dodson Law

A theory suggesting that there is an optimal level of arousal for performance, and that too much or too little arousal can adversely affect task performance.

Task Difficulty

The level of challenge presented by a task, which can influence a person's performance and effort required to complete it.