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:

Social Anxiety Disorder

Social Anxiety Disorder is a mental health condition marked by intense fear of social interactions, causing considerable distress and impaired ability to function in at least some aspects of daily life.

Phobias

An intense, irrational fear of specific objects, activities, or situations that leads to avoidance behavior.

Obsessive-compulsive Disorder

A mental health disorder characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions).

Spectrum Disorders

A range of conditions that vary in severity but are categorized under a single disorder, emphasizing the variability and complexity of symptoms among individuals.