The Width of a Confidence Interval Estimate for a Proportion

question 84

Multiple Choice

The width of a confidence interval estimate for a proportion will be

• A) wider for a sample size of 100 than for a sample size of 50.
• B) narrower when the sample proportion is 0.50 than when the sample proportion is 0.20.
• C) narrower for 90% confidence than for 95% confidence.
• D) narrower for 99% confidence than for 95% confidence.

---

Definitions:

Metabolizes Alcohol

The process by which the body chemically breaks down alcohol, primarily in the liver, by enzymes such as alcohol dehydrogenase.

Personality Characteristics

Enduring traits or qualities in an individual's character that influence thoughts, emotions, and behavior in various situations.

Alcohol Expectancy Theory

A theory that proposes drinking behaviour is largely determined by the reinforcement that an individual expects to receive from it. Most of the subjective experiences actually felt are a function of expectation and attitude and not an effect of the alcohol.

Adolescents

Individuals in the transitional stage of human development that occurs between childhood and adulthood, typically ranging from ages 10 to 19.