A Recent Survey of Local Cell Phone Retailers Showed That

question 2

Essay

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.
a. What is the probability that a cell phone sold last month had a camera or a music player?
b. What is the probability that a cell phone sold last month did not have either a camera or a music player?
c. Are the events of a cell phone having a camera and a music player disjoint or mutually exclusive? Explain.

---

Definitions:

Facial-Feedback Hypothesis

The idea that sensory feedback from our facial expressions can affect our mood and emotions, suggesting that smiling can make us feel happier.

Positive Feelings

encompass emotions and sentiments that are uplifting, joyous, or gratifying, contributing to an overall sense of well-being.

Facial Expressions

Visual cues expressed by the muscles in the face conveying emotions, social information, or reactions to stimuli.

Paul Ekman

A psychologist who is best known for his work on the facial expressions of emotion and their relation to our feelings.