When everyone in the target population had an equal likelihood of being selected to take part in a survey, the researcher has selected a:
a. biased sample
b. random population
c. nonrepresentative sample
d. random sample
D
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Which statement supports the proposition that the presence of an X chromosome appears to be necessary for life?
a. X-chromosomal genotypes are expressed as consistent phenotypes at a rate of around 85%, while Y-chromosomal genotypes are expressed as consistent phenotypes at a rate of only about 15%. b. The X chromosomes are expressed far earlier in the prenatal period than the Y chromosomes c. There are no chromosomal disorders wherein a person has only Y chromosomes. d. Most of the lethal chromosomal disorders, including Tay-Sachs disease and cystic fibrosis, are located on the Y chromosome.
The two types of source traits are:
a. common traits and unique traits. c. ability traits and dynamic traits. b. constitutional traits and environmental-mold traits. d. environmental-mold traits and temperament traits.
Whose psychosexual ideas about child development are generally not in favor with developmental theorists?
a. Piaget's c. Freud's b. Erikson's d. Luria
Data are an indispensable part of scientific method
Indicate whether the statement is true or false