A Normal Distribution Has a Mean of µ = 100

question 64

Multiple Choice

A normal distribution has a mean of µ = 100 with σ = 20.If one score is randomly selected from this distribution,what is the probability that the score will have a value between X = 100 and X = 130?

• A)0.9332
• B)0.0668
• C)0.4332
• D)0.8664

---

Definitions:

Probability Distribution

A function in statistics outlining every possible outcome and its probability for a random variable across a predetermined scope.

Car Salespeople

Individuals engaged in selling automobiles, often working at car dealerships or showrooms.

Joint Probability Distribution

The probability distribution of two or more random variables at the same time, used to study the relationship between them.

Probability Distribution

Describes how the probabilities are distributed over the values of a random variable, showing the likelihood of different outcomes.