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.

---

Definitions:

Physical Attributes

The tangible and visible characteristics or features of a person, object, or place.

Luck

An unpredictable and uncontrollable force that causes an event to occur in a beneficial or harmful way without being part of a deliberate intention.

Poverty Rate

The proportion of the population living below the poverty line, indicating the level of economic deprivation in a society.

Income Share

The distribution of total income among different groups or individuals, often used to analyze economic inequality.