What Type of Test for Population Means Should Be Performed

question 93

Multiple Choice

What type of test for population means should be performed when employees are first tested, trained, and then 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:

Qualified Day Care

A childcare service that meets governmental regulations and standards, expenses for which may be eligible for tax deductions or credits.

Care Credit

A type of credit card that is specifically designed to help consumers pay for health care services with special financing options.

Qualified Day Care

A care facility or program that meets specific state and/or federal regulations, making expenses potentially eligible for tax credits.

Child and Dependent

A minor or other individual, such as an elderly parent, who relies on another person for over half of their financial support and can qualify for certain tax benefits.