Researchers usually cannot use populations when doing their studies because

a. populations are not representative of a sample.
b. it is usually impractical or impossible.
c. statistical methods are only applicable to sample groups.
d. the requirement of randomness cannot be met.


B

Psychology

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In treating Parkinson's disease, the area of the brain that fetal brain tissue or stem cells is transplanted into is the:

A. basal ganglia B. hippocampus C. cerebellum D. occipital lobe

Psychology

There is a company in the United States that currently sends letters to people who have declared bankruptcy and offers them $45,000, plus expenses, to donate a kidney

Indicate whether the statement is true or false

Psychology

The general term ____________________ is used to refer to abnormal sleep disturbances, such as nightmares, night terrors, and sleepwalking

Fill in the blank(s) with correct word

Psychology

Marriage tends to _____ happiness, and having children tends to _____ marital satisfaction.

A) increase; increase B) have no effect on; increase C) have no effect on; decrease D) increase; decrease

Psychology