In a Study of Typical Student Grade-Point Averages (GPAs), We

question 49

Multiple Choice

In a study of typical student grade-point averages (GPAs) , we sample 16 students and find an average GPA of 2.76, with a standard deviation of 0.48.Assuming the GPAs are normally distributed, what is an interval that we can be 80% certain contains the mean student GPA?

• A) (2.12, 3.40)
• B) (2.61, 2.91)
• C) (2.60, 2.92)
• D) (2.66, 2.86)

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Definitions:

Personality Traits

Inherent characteristics or qualities that influence an individual's behavior, thinking, and emotions consistently over time.

Perceive

The act of becoming aware or conscious of something through the senses or cognitive processes.

Stressor

An event, situation, or stimulus that causes stress, triggering a physical or psychological response.

Type A Personality

A temperament characterized by high levels of competitiveness, self-imposed stress, impatience, and urgency.