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:

Performance Levels

Measures of an individual, group, or organization's output compared to a predefined standard or expectation.

Direct Costs

Costs that can be directly attributed to the production of specific goods or services, such as labor and materials.

Factory Rent

Factory rent is the cost associated with leasing or renting a manufacturing facility, which is typically categorized as a fixed expense for the business.

Wages

Payments made to employees, typically on an hourly, daily, or weekly basis, for the labor or services they provide.