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:

Freons

A trademarked name for a group of chlorofluorocarbon (CFC) and hydrochlorofluorocarbon (HCFC) gases used primarily as refrigerants and aerosol propellants, now commonly linked to ozone depletion.

Propellants

Chemicals that are used to propel an object by generating gas under pressure; common in rockets and aerosol cans.

Aerosol Cans

Containers that use pressurized gas to dispense substances in a fine spray.

N-hexane

A straight-chain alkane with the formula C6H14, used as a non-polar solvent in the extraction of edible oils from seeds and vegetables.