According to the National Osteoporosis Foundation, people should do all of the following to combat osteoporosis except
A. taking calcium supplements.
B. increasing exposure to sunlight.
C. tobegin taking countermeasures to osteoporosis after the onset of menopause.
D. getting the recommended amounts of vitamin D from dietary sources.
Answer: C
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The second wave of Mexican Americans came to the United States since
A) 1890-1907. B) 1900-1919. C) 1921-1930. D) 1945-1960.
Social scientists gather data from samples instead of populations because
a. samples are much larger and more complete b. samples are more trustworthy c. populations are often too large to test d. samples are more meaningful and interesting
There is a correlation of .445 between the percentage of families below the poverty line and the percentage of families headed by unmarried females. Suppose a researchers believes this correlation is the caused by the fact that marriages which face economic hardships are more likely to end in divorce, thereby producing more female-headed households. The researcher in this example would say that
_____________ is the independent variable. a. the percentage of families below the poverty line; the percentage of female-headed families b. the percentage of female-headed families; the percentage of families below the poverty line c. the female employment rate; the percentage of female-headed families d. either a or b above
One of the lowest-paid occupations in the U.S. is
a. pipefitting b. childcare c. trash collection d. coal mining