Consider the Probability Distribution Below $$\begin{array} { c c } x & f ( x ) \\10 & .2 \\20 & .3 \\30 & .4 \\40 & .1\end{array}$$

question 81

Multiple Choice

Consider the probability distribution below. $$\begin{array} { c c } x & f ( x ) \\10 & .2 \\20 & .3 \\30 & .4 \\40 & .1\end{array}$$ The variance of x equals

• A) 9.165
• B) 84
• C) 85
• D) 93.33

---

Definitions:

Dialog Box

A graphical user interface element that prompts the user to provide information or make selections within a software application.

Parameter Criteria

Conditions or variables specified in a query or function that must be met for records to be selected or actions to be performed.

Query Design

The process of building a query in a database, involving selecting fields, defining criteria, and possibly joining tables, to extract specific data.

Long Text Field

A type of database field designed to store extensive text, allowing for more detailed descriptions or comments.