If We Are Testing for the Difference Between the Means

question 194

Multiple Choice

If we are testing for the difference between the means of 2 related 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.

Distinguish between true and adequate hypotheses and the implications for explanations.

Recognize the importance of the relationship between hypotheses and explananda in constructing explanations.

Understand the role of auxiliary assumptions in connecting hypotheses to explananda.

Identify common flaws in explanations and understand their implications.

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Definitions:

Extension

The movement by which the angle between two adjoining parts of the body is increased; opposite of flexion.

Hyperesthesia

An increased sensitivity to stimulation, particularly touch.

Summation Effect

The process where combined effects of multiple stimuli result in a greater response than the sum of their individual effects.

Analgesia

The absence of pain in response to stimulation which would normally be painful, often achieved through the use of medication.