The Scores on a Certain Test Are Normally Distributed with a Mean

question 34

Multiple Choice

The scores on a certain test are normally distributed with a mean score of 51 and a standard deviation of 2. What is the likelihood that a sample of 90 students will have a mean score of at least 51.2108?

• A)0.1587
• B)0.3174
• C)0.3413
• D)0.8413

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Definitions:

Optimistic Personality

A personality trait characterized by a general expectation that good things will happen or believing that the future will be favorable because one can control important outcomes.

Oxytocin

A hormone and neurotransmitter often associated with social bonding, reproduction, and childbirth.

Serotonin

Serotonin is a neurotransmitter that plays a key role in regulating mood, appetite, and sleep, among other functions.

Emotion-focused Coping

Strategies aimed at managing the emotional response to a problem, rather than tackling the problem itself.