A 95% Confidence Interval for the Population Proportion of Professional

question 138

Multiple Choice

A 95% confidence interval for the population proportion of professional tennis players who earn more than $2 million a year is found to be between 0.82 and 0.88. What was the approximate sample size used to obtain this information?

• A) 545
• B) 387
• C) 382
• D) 233

---

Definitions:

Intellectual Development

The growth and change in a person's ability to think, reason, and understand complex concepts and ideas over time.

Emotional Uncertainty

Emotional uncertainty refers to feelings of indecision or doubt regarding one's own emotions, often experienced in complex emotional or relational contexts.

Facial Expressions

The movements of the facial muscles that convey emotions, intentions, or social information, serving as a universal form of nonverbal communication.

Intellectual Aptitude

The capacity of a person to understand complex concepts, solve problems, and learn from experience, often assessed through standardized intelligence tests.