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:

Moral Development

The process through which individuals develop proper attitudes and behaviors toward other people in society, based on social and cultural norms, rules, and laws.

Human Beings

Members of the species Homo sapiens, characterized by their ability to think critically, communicate through complex language, and create and manipulate their environment.

Formal Operations

The final stage in Piaget's theory of cognitive development, characterized by the ability to think abstractly, reason logically, and manage problems systematically.

Cognitive Development

The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding over the lifespan.