Let the Random Variable Z Follow a Standard Normal Distribution

question 119

Multiple Choice

Let the random variable Z follow a standard normal distribution.Find P(-2.21 < Z < 0) .

• A)0.9864
• B)0.4864
• C)0.0136
• D)0.5136

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Definitions:

Normal Distribution

A bell-shaped distribution that is symmetric about the mean, where data near the mean are more frequent in occurrence than data far from the mean.

Sample

A subset of individuals from within a larger population used to approximate characteristics of the whole population.

Poisson Probabilities

The likelihood of a given number of events happening in a fixed interval of time or space, assuming the events occur with a known constant mean rate and independently of the time since the last event.

Poisson Distribution

A probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space when these events occur with a known constant rate and independently of the time since the last event.