The Lengths of Human Pregnancies Are Normally Distributed with a Mean

question 31

Multiple Choice

The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy last at least 300 days?

• A) 0.0166
• B) 0.4834
• C) 0.0179
• D) 0.9834

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Definitions:

Fundamental Attribution Error

The tendency to over-emphasize personality traits and underestimate situational factors when explaining another's behavior.

Cognitive Dissonance

The mental discomfort or psychological stress experienced by an individual who holds two or more contradictory beliefs, ideas, or values at the same time.

Foot-In-The-Door Phenomenon

A psychological principle where agreeing to a small initial request increases the likelihood of agreeing to a larger request later.

Attitude

A psychological tendency expressed by evaluating a particular entity with some degree of favor or disfavor, shaping how we perceive and interact with the world.