A Hypersensitivity Reaction Occurs

question 3

Multiple Choice

A hypersensitivity reaction occurs

• A) In individuals with diseases of the immune system.
• B) During autoimmune diseases.
• C) On a second or subsequent exposure to an antigen.
• D) In immunologically tolerant individuals.
• E) During the first exposure to an antigen.

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Definitions:

Probability

A measure of the likelihood that an event will occur, represented as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

Random Sample

A sample in which each member of the population has an equal probability of being selected, aiming for a representative subset.

Standard Error

A statistical measure that indicates the accuracy of a sample mean by estimating the dispersion of sample means around the population mean.

Statistic

A numerical measure that describes a characteristic of a sample, which is often used to estimate the corresponding parameter in the population.