Use the Addition Rule or Multiplication Rule for Probability

question 24

Multiple Choice

Use the addition rule or multiplication rule for probability.
-A recent survey of local cell phone retailers showed that of all cell phones sold last
Month, 64% had a camera, 28% had a music player and 22% had both. The probability
That a cell phone sold last month had a camera or a music player is

• A) .22
• B) .70
• C) .92
• D) .30
• E) .08

---

Definitions:

Surface Traits

Aspects of personality that can easily be seen by other people in the outward actions of a person.

Raymond Cattell

A psychologist known for his research in personality, intelligence theory, and a range of psychometric tests, contributing significantly to psychological assessment.

Trait Perspective

A view in psychology that focuses on the identification and measurement of specific personality characteristics or traits.

Goals of Psychology

To describe, explain, predict, and control behavior and mental processes through scientific methods.