QUESTION 16 A researcher is interested in the influence of an organic-food seminar on consumers' purchase behavior. Before they went to the seminar, participants were asked about their frequency of organic food shopping every week; after the participants all have gone to the seminar, they were asked about their frequency of organic shopping again. Which analysis should the researcher perform? O one-way ANOVA O one-sample t test O dependent-samples t-test O independent-samples t-test