In testing for the significance of the difference between two sample means when the sample size is small, we may assume equal population variances if
a. sample sizes are exactly the same.
b. sample sizes are varied.
c. sample sizes are approximately equal.
d. none of the above, we cannot assume equal population variance.
ANSWER: c
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An urban trend beginning in the 1980s has been
a. proliferation of shopping malls. b. proliferation of industrial parks. c. revitalization of the cities' downtowns. d. the formation of edge cities.
The color-blind ideology assists in fighting racial discrimination.
Answer the following statement true (T) or false (F)
Historically, society has been resistant to changes in the definition and composition of family because of the influence of
a. social mores. b. family traditions. c. social institutions. d. national customs.
The negative attitudes that many Americans have about unions sometimes lead them into the ________.
A. fallacy of composition B. fallacy of circular reasoning C. fallacy of appeal to prejudice D. fallacy of retrospective determinism