Determine Whether the Following Is a Probability Distribution

question 96

Essay

Determine whether the following is a probability distribution. If not, identify the requirement that is not satisfied.
-If a person is randomly selected from a certain town, the probability distribution for the number, x, of siblings is as described in the accompanying table. $$\begin{array} { c | c } \mathrm { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 0 & 0.27 \\1 & 0.29 \\2 & 0.23 \\3 & 0.10 \\4 & 0.08 \\5 & 0.02\end{array}$$

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Definitions:

RNA Interference

A biological process in which RNA molecules inhibit gene expression or translation, by neutralizing targeted mRNA molecules.

Noncoding RNA

RNA molecules that are not translated into proteins but have roles in regulating gene expression and other cellular processes.

Gene Expression

The process by which information from a gene is used to synthesize a functional gene product, typically protein or RNA.

LncRNA

Long non-coding RNA; a type of RNA longer than 200 nucleotides that does not code for protein but has roles in regulating gene expression.