A chi-square test for independence is being used to evaluate the relationship between two variables. If the test has df = 3, what can you conclude about the two variables?
a. One variable consists of 2 categories and the other consists of 3 categories.
b. One variable consists of 2 categories and the other consists of 4 categories.
c. Both variables consists of 2 categories.
d. Both variables consists of 3 categories.
B
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Epidemiologists have a difficult time pinning down the prevalence of personality disorders because
a. there is considerable overlap among categories in these disorders. b. there are too many dimensions to be measured. c. there is no agreement on the criteria for personality disorders. d. they are so rare.
Juanita and Emilia are Latino sisters who were both raised in a family and community that discouraged drinking among women. Juanita has been living in the U.S. for 15 years, while Emilia remained in their home country. Now, Juanita drinks alcohol much more regularly and heavily than Emilia. This is an example of which type of influence on drug use?
a. acculturation b. genetics c. peer pressure d. biological e. socioeconomic conditions
The drug L-Dopa can sometimes cause schizophrenia-like symptoms because it increases levels of:
a. serotonin b. acetylcholine c. dopamine d. GABA
Bobby's growth is stunted and he exhibits mental retardation. More than likely he has
a. too much thyroxin. c. cretinism. b. hyperthyroidism. d. none of these.