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

question 55

Multiple Choice

The scores on a certain test are normally distributed with a mean score of 53 and a standard deviation of 5. What is the probability that a sample of 90 students will have a mean score of at
Least 53.527?

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

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Definitions:

Tradition

The transmission of customs, beliefs, and cultural practices from one generation to another.

Marian Anderson

A celebrated African-American contralto and one of the most important singers of the 20th century, particularly known for her performance at the Lincoln Memorial in 1939.

Open-Air Concert

An outdoor music performance in which the audience and performers are exposed to the elements, often held in parks, amphitheaters, or other public spaces.

Lincoln Memorial

A monument in Washington D.C. dedicated to honoring President Abraham Lincoln, the 16th president of the United States, and symbolizing his ideals of freedom and equality.