A Recent Survey Shows That the Probability of a College

question 126

Multiple Choice

A recent survey shows that the probability of a college student drinking alcohol is 0.6. Further, given that the student is over 21 years old, the probability of drinking alcohol is 0.8. It is also known that 30% of the college students are over 21 years old. The probability of drinking or being over 21 years old is ________.

• A) 0.24.
• B) 0.42.
• C) 0.66.
• D) 0.90.

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Definitions:

Universal Milestones

Developmental stages or achievements that are common to all humans, typically used to track growth and development across populations.

Adaptation

The process by which organisms adjust and change over time in response to environmental changes.

Moro Reflex

An involuntary reflex found in newborns, which is triggered by a sudden lack of support and involves the baby spreading its arms, unspreading them, and crying, usually to embrace.

Sensory Skills

Abilities related to receiving and processing sensory information through sight, sound, touch, taste, and smell.