Which of the Following Is Not a Characteristic of a Probability

question 78

Multiple Choice

Which of the following is not a characteristic of a probability density function f(x) ?

• A) f(x) ≥ 0 for all values of x.
• B) f(x) is symmetric around the mean.
• C) The area under f(x) over all values of x equals one.
• D) f(x) becomes zero or approaches zero if x increases to +infinity or decreases to -infinity.

---

Definitions:

Variable Cost

Expenses that vary in direct proportion to changes in the level of production or sales volume.

Fixed Cost

Costs that remain constant in total amount with changes in the volume of activity, such as rent and salaries.

Mixed Cost

Expenses that have both fixed and variable components, changing with the level of activity but also containing a static element.

Margin Of Safety

The difference between actual or projected sales and the break-even point, indicating the amount of sales that can decline before a business incurs a loss.