The Sample Mean for a Recent Introductory Psychology Test Was

question 17

Multiple Choice

The sample mean for a recent introductory psychology test was 78,and the sample variance was 9.If a student's z-score = -2.0,what was this student's raw test score?

• A)84
• B)60
• C)72
• D)96

---

Definitions:

Doubled

A term indicating that a quantity, value, or size has increased by 100 percent, resulting in its multiplication by two.

Stayed The Same

A condition where no change or variation has occurred over a specified period.

Quantity Theory

An economic theory that proposes a direct relationship between the quantity of money in an economy and the level of prices of goods and services.

Doubled

Refers to an increase by 100% or a situation where a quantity has become twice as large.