Find the Mean of the Given Probability Distribution A)110
B)2

question 27

Multiple Choice

Find the mean of the given probability distribution.
-In a certain town, 30% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults (among 4 randomly selected adults) who have a college degree. $$\begin{array} { c | r } \mathrm { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 0 & 0.2401 \\1 & 0.4116 \\2 & 0.2646 \\3 & 0.0756 \\4 & 0.0081\end{array}$$

• A)1.10
• B)2.00
• C)1.44
• D)1.20

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Definitions:

Regression Toward

A statistical phenomenon that suggests that extreme scores or extreme behavior are likely to be closer to the average on subsequent observations or attempts.

Illusion of Control

The overestimation of one's ability to control events or outcomes that are largely or entirely beyond their actual influence.

Standard Deviation

An indicator of the extent of variability or scatter among a collection of numbers.

Low in Variability

Describes a set of data or a situation where there is little difference or diversity among the elements or outcomes.