What Type of Test for Population Means Should Be Performed

question 73

Multiple Choice

What type of test for population means should be performed when examining a situation in which employees are first tested,then trained,and finally retested?

• A) A z test under independent sampling with known population variances.
• B) A t test under independent sampling with unknown but equal population variances.
• C) A t test under dependent sampling.
• D) A t test under independent sampling with unknown and unequal population variances.

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Definitions:

Nationalizations

The process by which governments take private assets into public ownership, typically key industries or resources.

Polycentric

An approach in international business where a company gives autonomy to each host country operation to tailor strategies and practices to local conditions.

Geocentric

An approach or viewpoint that considers the earth as the center, often used in the context of international business to describe a strategy that views the world as a potential market with no inherent borders.

Ethnocentric

The belief in the superiority of one's own ethnic group or culture, often at the expense of understanding or respecting other cultures.