If We Are Testing for the Difference Between the Means

question 69

Multiple Choice

If we are testing for the difference between the means of 2 independent populations presuming equal variances 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.

---

Definitions:

Preconscious

Part of the mind that contains thoughts and feelings that are not currently in conscious awareness but can be easily brought to consciousness.

Pre-frontal Cortex

The front part of the frontal lobe of the brain, essential in regulating behavior, decision-making, problem-solving, and moderating social behavior.

Source of Energy

The origin from which power is derived to perform various functions, can refer to physical, biological, or technological sources.

Instincts

In Freud’s system, mental representations of internal stimuli, such as hunger, that drive a person to take certain actions.