X Is a Normally Distributed Random Variable with a Mean

question 116

Multiple Choice

x is a normally distributed random variable with a mean of 7 and a standard deviation of 2. The probability that x is between 6.48 and 7.56 is

• A) 0.9524.
• B) 0.0476.
• C) 0.7872.
• D) 0.2128.

---

Definitions:

Fraternal Twins

are siblings born at the same time who share the same womb but have different fertilized eggs, making them genetically similar as typical siblings.

Evolutionary Psychology

A theoretical approach in psychology that examines mental traits such as memory, perception, and language from a modern evolutionary perspective.

Evening People

Individuals who naturally prefer and are more active and alert in the evening hours, as opposed to morning people.

Ostracized

Being excluded, shunned, or ignored by others in a social or professional context.