When Computing a 95 Percent Confidence Interval for σ² with a Sample

question 74

Multiple Choice

When computing a 95 percent confidence interval for σ² with a sample of n = 30, what values of χ² would we use in the calculations?

• A) 45.7222 and 16.0471
• B) 46.9792 and 16.7908
• C) 42.5569 and 17.7083
• D) 43.7729 and 18.4926

---

Definitions:

Free Market

An economic system in which prices are determined by unrestricted competition between privately owned businesses.

Life Expectancy

The average period that an individual is expected to live, based on statistical averages of age, gender, and other demographic factors.

Leisure Time

Free time not taken up by work, chores, or other obligatory activities, allowing individuals to engage in activities of their choice.

State-Supported Company

A business that receives financial aid, subsidies, or other forms of support from the government.