If a Set of Standardized Test Scores Is Normally Distributed,having

question 15

Multiple Choice

If a set of standardized test scores is normally distributed,having a mean of 75 and a standard deviation of 6,approximately 95 percent of the scores are somewhere between

• A) 72 and 78.
• B) 75 and 87.
• C) 69 and 81.
• D) 63 and 87.

---

Definitions:

Poisson Distribution

A probability distribution that models the number of times an event occurs in a fixed interval of time or space when these events occur with a known constant mean rate and independently of the time since the last event.

Nuclear Power Plant

A facility that uses nuclear reactions to generate heat, which is then used to produce electricity.

Probability

A measure of the likelihood that an event will occur, often expressed as a number between 0 and 1.

Poisson Random Variable

A type of discrete random variable that expresses the probability of a given number of events occurring in a fixed interval of time or space.