In 1970, only 11 percent of births were to unmarried women; by 2011, this figure had increased to what percentage of all births?

The situation of truncated government helped the Republican Party shut down the federal government in the fall of 2013

a. true b. false

Problem statements for differential research should

A) Focus on comparing groups that differ on only one variable. B) Have several comparisons for the factors of interest. C) Focus on group differences in theoretically significant dependent measures. D) All of the above