A Professor Applies the Variance in Scores Between Two Sections

question 71

Multiple Choice

A professor applies the variance in scores between two sections that he teaches.The students of each section took the same test.The random samples drawn from the observations yield sample variances of = 203.15 and = 474.42 for samples of n₁ = 13 and n₂ = 16,respectively.Which of the following is a 99% confidence interval for the ratio of the population variances?

• A) [0.1540,2.7809]
• B) [0.1008,2.0217]
• C) [0.1386,3.0895]
• D) [0.0907,1.8198]

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Definitions:

Pure Command Economy

An economic system where all production, investment, prices, and incomes are controlled by the government.

Privately Owned

Refers to properties, businesses, or assets that are owned by individuals or private companies and not by the state or public entities.

Price System

A mechanism through which prices adjust to balance supply and demand for goods and services in an economy.

Centralized Planning

A system of economy where all choices related to the creation and allocation of goods and services are made by a central governmental body.