Which of the Following Statements About a Discrete Random Variable $\Sigma$

question 63

Multiple Choice

Which of the following statements about a discrete random variable and its probability distribution are true?

• A)Values of the random variable can never be negative.
• B)Some negative values of f(x) are allowed as long as \(\Sigma\)f(x) = 1.
• C)Values of f(x) must be greater than or equal to zero.
• D)The values of f(x) increase to a maximum point and then decrease.

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Definitions:

External Domain

External domain often refers to the part of a protein that extends outside the cell membrane or to the publicly accessible part of a web domain or internet site.

Signaling Molecule

A chemical substance, such as a hormone or neurotransmitter, that is involved in transmitting information between cells and tissues within an organism.

Receptor

A molecular structure within or on the surface of a cell that binds to specific molecules like hormones or neurotransmitters, triggering a specific cellular response.

Histamine

Substance released from mast cells that causes inflammation.