8. which of the following statements correctly describes the significance of the case? (3 points) in roe v. wade, the right of women to vote and work for wages was ruled protected by the fourth amendment. in texas v. johnson, the use of flag burning in protest was ruled protected speech under the first amendment. in gideon v. wainwright, the protection against illegal search and seizure was upheld according to the fifth amendment. in mapp v. ohio, the reading of rights to a criminal suspect was ruled protected through the sixth amendment.

The authors of the paper "fudging the numbers: distributing chocolate influences student evaluations of an undergraduate course"† carried out a study to see if events unrelated to an undergraduate course could affect student evaluations. students enrolled in statistics courses taught by the same instructor participated in the study. all students attended the same lectures and one of six discussion sections that met once a week. at the end of the course, the researchers chose three of the discussion sections to be the "chocolate group." students in these three sections were offered chocolate prior to having them fill out course evaluations. students in the other three sections were not offered chocolate. the researchers concluded that "overall, students offered chocolate gave more positive evaluations than students not offered chocolate." indicate whether the study is an observational study or an experiment. give a brief explanation for your choice.