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:

Oral Stage

In Freudian psychoanalysis, an early life stage focusing on the pleasures and frustrations associated with the mouth, sucking, and being fed.

Characteristic Personality Traits

Features that are distinctive and describe consistent behaviors in a person across different situations and over time.

Primary Process

In psychoanalytic theory, the unconscious thought processes that are primitive and symbolic, driven by the pleasure principle.

Heredity

The passing on of physical or mental characteristics genetically from one generation to another.