In Testing Whether the Means of Two Normal Populations Are

question 150

Multiple Choice

In testing whether the means of two normal populations are equal, summary statistics computed for two independent samples are as follows: , , , , , and . Assume that the population variances are equal. What is the standard error of the sampling distribution of the sample mean difference ?

• A) 0.1017
• B) 0.3189
• C) 1.1275
• D) 1.2713

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Definitions:

Palatine Tonsils

Lymphatic tissue located on each side of the throat that helps defend the body against infection by trapping pathogens.

Soft Palate

The flexible, muscular part at the back of the roof of the mouth, which closes off the nasal passages during swallowing.

Hard Palate

Floor of the nasal cavity that separates the nasal cavity from the oral cavity; composed of the palatine processes of the maxillary bones and the horizontal plates of the palatine bones; also called bony palate.

Bolus

A term used to describe a mass of substance, especially chewed food at the moment of swallowing.