If $\mathrm { x }$ Is a Binomial Random Variable, Calculate $\sigma ^ { 2 }$

question 51

Multiple Choice

If $\mathrm { x }$ is a binomial random variable, calculate $\sigma ^ { 2 }$ for $\mathrm { n } = 40$ and $\mathrm { p } = 0.7$ .

• A) \(19.6\)
• B) \(2.898\)
• C) 28
• D) \(8.4\)

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Definitions:

Flu Vaccine

A vaccine that protects against the influenza virus, often updated annually to combat the most common strains.

Probability

A measure of the likelihood that an event will occur.

Salesperson

An individual who sells goods or services, often working on commission or for an organization.

Poisson Random Variable

A variable that represents the number of times an event occurs in a fixed interval of time or space, following the Poisson distribution.