A Teacher Reports That the Class Scores Are Generally Distributed

question 10

Multiple Choice

A teacher reports that the class scores are generally distributed according to a bell curve.This means:

• A)the mean,median,and mode have different values
• B)the left half and the right half are not symmetrical
• C)approximately 95% of the scores fall between -1 and +1 standard deviation from the mean
• D)100% of the scores fall between -3 and +3 standard deviations from the mean

---

Definitions:

Events A And B

Refers to two occurrences in probability and statistics that can be analyzed for their individual or joint likelihood.

Mutually Exclusive

Events that cannot happen at the same time.

Joint Probability

The probability of two events occurring simultaneously.

Independent

In statistics, refers to variables that are not affected by or related to the changes in other variables in the context of a study or model.