What Is the Most Significant Reason for the Dramatic Increase

question 29

Multiple Choice

What is the most significant reason for the dramatic increase in expected life span over the last 100 years?

• A) Better living habits
• B) Improved surgical techniques
• C) The development of antibiotics and immunizations
• D) A decrease in the number of people living in poverty

---

Definitions:

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Hourly Rate

The amount of money paid for one hour of work.

Expected Value

The predicted value of a variable, calculated as the sum of all possible values each multiplied by the probability of its occurrence.

Salary Increase

The process of raising an employee's pay rate, typically as recognition for job performance, inflation adjustments, or promotion.