In what proportion of marriages does divorce end an abusive or destructive relationship?

According to research, in which of the following areas were striking changes observed in Inuit adolescents' behavior after the introduction of television?

a. Romantic relationships and education b. Education and competitive sports c. Competitive sports and dancing d. Romantic relationships and competitive sports

What is the basis for determining whether a statistical result is significant?

a) likely level of external validity b) practical importance of the research findings c) probability that the results are due to chance d) judgment of the appropriateness of the statistical tests used