Find the Expected Value of the Random Variable What Is the Expected Value of Thunderstorms for the Town

question 111

Multiple Choice

Find the expected value of the random variable. Round to the nearest cent unless stated otherwise.
-The probability distribution below describes the number of thunderstorms that a certain town may experience during the month of August. Let X represent the number of thunderstorms in August. $$\begin{array} { l | l l l l } \text { Number of storms } & 0 & 1 & 2 & 3 \\\hline \mathrm { P } ( X = \mathrm { X } ) & 0.1 & 0.2 & 0.5 & 0.2\end{array}$$ What is the expected value of thunderstorms for the town each August? Round the answer to one
Decimal place.

• A)2.0
• B)1.5
• C)1.9
• D)1.8

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Definitions:

Cranial Cavity

The space within the skull that houses the brain and other structures related to the central nervous system.

Mesonephros

A phase in the development of the vertebrate urinary and reproductive organs, serving as a temporary kidney during certain stages of embryonic development.

Pronephros

The most primitive form of the kidney found in embryonic development of vertebrates, functioning temporarily before giving way to more advanced kidney forms.

Allantois

An embryonic membrane in eggs and some mammals that deals with respiratory gas exchange and the management of waste.