Answer Happy

10. Researchers randomly assign college students to either chew gum while studying a chemistry lesson or to not chew gum while studying the lesson. At the end of the lesson, the students completed a multiple-choice test about the contents of the lesson. Those students who chewed gum during the lesson correctly answered more multiple-choice questions than those students who did not chew gum during the lesson. In fact, the results of the study were deemed to be "statistically significant." What does this mean? A. Teachers will now be required to distribute chewing gum to their students in order to help the students learn. B. There was a placebo effect in this study C. The study was double-blind, D. There was no explanatory variable involved in the study, E. The difference between the groups was of a size that would almost never happen just by chance.