The Expected Value of a Discrete Random Variable

question 6

Multiple Choice

The expected value of a discrete random variable

• A)is the outcome that is most likely to occur.
• B)can be found by determining the 50% value in the c.d.f.
• C)equals the population median.
• D)is computed as a weighted average of the possible outcome of that random variable, where the weights are the probabilities of that outcome.

---

Definitions:

Military Expansion

The growth and increase in size or scope of a country's armed forces or territorial reach.

Social Trap

A situation where a group or individual acts in a way that benefits them in the short term but ultimately leads to a situation that is damaging to all parties in the long term.

Collective Destruction

The act of a group causing harm or damage intentionally or unintentionally, often through a shared ideology or goal.

Reciprocity Norm

A social norm that expects individuals to respond to each other in kind, rewarding kind actions with kindness.