What Is the Mean of X, Given the Exponential Probability $$f ( x ) = \frac { 1 } { 20 } e ^ { \frac { x } { 20 } } \text { for } x \geq 0 \text { ? }$$

question 25

Multiple Choice

What is the mean of x, given the exponential probability function $$f ( x ) = \frac { 1 } { 20 } e ^ { \frac { x } { 20 } } \text { for } x \geq 0 \text { ? }$$

• A)0.05
• B)20
• C)100
• D)2,000

---

Definitions:

Affect Regulation

The process by which individuals influence their own emotional experiences, managing the type, intensity, and duration of emotions.

Cooperative Play

A stage in child development where children engage in play activities together, working towards a common goal or enjoying activities in a shared space.

Parallel Play

A stage of early childhood development where children play adjacent to each other but do not interact or share toys, indicating emerging social skills.

Aggressive Behavior

Actions or responses that are intended to harm or intimidate others.