In Testing the Difference Between Two Population Means, for Which

question 35

Multiple Choice

In testing the difference between two population means, for which the population variances are unknown and are not assumed to be equal, two independent samples of large sizes are drawn from the populations. Which of the following tests is appropriate?

• A) Z-test.
• B) Pooled-variances t-test.
• C) Unequal variances t-test.
• D) Matched pairs t-test.

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Definitions:

Urinary System

The organ system responsible for creating, storing, and eliminating urine.

Spleen

An organ located under the ribcage and above the stomach in the left upper quadrant of the abdomen that acts as a blood filter in the immune system.

Lymphatic

Pertaining to the lymphatic system, which is a network of tissues and organs that help rid the body of toxins and waste.

Digestive

Pertaining to digestion or the system in the body involved in the mechanical and chemical breakdown of food.