In Comparing Two Population Means of Interval Data,we Must Decide $\mu$

question 43

True/False

In comparing two population means of interval data,we must decide whether the samples are independent (in which case the parameter of interest is )or matched pairs (in which case the parameter is $\mu$ _D)in order to select the correct test statistic.

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Definitions:

Gonioscope

An optical instrument used to examine the angle of the anterior chamber of the eye.

Keratometer

An instrument used to measure the curvature of the anterior surface of the cornea, particularly in determining the degree of astigmatism.

Exophthalmometer

An instrument used to measure the degree of forward displacement of the eyeball, as seen in conditions like Graves' disease.

Tonometer

An instrument used to measure the pressure inside the eye, important in glaucoma diagnosis.