A Professor Wants to Compare the Variances of Scores Between

question 27

Multiple Choice

A professor wants to compare the variances of scores between two sections of classes. The students in each section took the same test. The random samples 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:

Departmentalization

The method of dividing an organization into distinct departments or units, each specializing in a particular function or area of operation.

Machine Bureaucracy

A highly structured, formal organization model, optimized for efficiency and characterized by a clear hierarchy, division of labor, and a focus on routine, repetitive tasks.

Simple Structure

An organizational design characterized by a low degree of departmentalization, wide spans of control, authority centralized in a single person, and little formalization.

Adhocracy

An organizational structure characterized by flexibility, employee empowerment, and an emphasis on innovation and problem-solving rather than hierarchy and strict procedures.