As the number of people in a sample gets larger, the distribution of means
A) begins to look less and less like the normal curve.
B) becomes a better approximation of the normal curve.
C) becomes more positively skewed.
D) becomes more negatively skewed.
B
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Evidence for a syndrome of externalizing behavior problems has been demonstrated by statistical analysis of
a. arrest reports. b. clinicians' diagnoses of children. c. children's descriptions of their own behavior. d. checklists on which adults rate children's psychological symptoms.
In the United States, people living below the poverty level generally
A) ?are more likely to have lower levels of education. B) ?are more likely than others to have health insurance. C) ?are more likely members of ethnic minority groups. D) ?are more likely to correspond to choices a and c both.