If We Are Testing for the Difference Between the Means

question 95

Multiple Choice

If we are testing for the difference between the means of two independent populations with samples of n1 = 20 and n2 = 20, the number of degrees of freedom is equal to:

• A) 39
• B) 38
• C) 19
• D) 18

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Definitions:

Distilled Water

Water that has been purified through distillation, removing impurities and minerals.

Hinged Instruments

Medical or surgical tools that have a pivot or a joint, allowing parts of the instrument to move in relation to each other, facilitating their use.

Healthcare Facility

A place where health care services are provided to patients, such as hospitals, clinics, long-term care facilities, and outpatient centers.

Infection

An occurrence where foreign microorganisms such as bacteria, viruses, and parasites begin to enter and multiply within the body where they are typically absent.