The Distribution of Scores on a Test Is Mound-Shaped and Symmetric

question 155

Multiple Choice

The distribution of scores on a test is mound-shaped and symmetric with a mean score of 78. If 68% of the scores fall between 72 and 84, which of the following is most likely to be the standard deviation of the distribution?

• A) 6
• B) 2
• C) 3
• D) 12 3 Use Chebyshev's Rule

---

Definitions:

Immoral

Actions or behavior that violate moral or ethical principles.

Nonprincipled

Lacking a set of fundamental beliefs or moral guidelines.

Leader

A person who guides or directs a group, organization, or country, often possessing qualities such as vision, courage, and integrity.

Red Flags

Warning signals indicating potential problems or issues in a given situation.