The Knight Foundation investigated whether high school students agreed with the statement that people should be allowed to burn or deface the American flag as a political statement. This question was asked in a survey of a representative sample of high school students in 2004 and again in a survey of a representative sample of high school students in 2014 (?Future of the First Amendment: 2014 Survey of High School Studentsand Teachers,? knightfoundation.org/media? /uploads/publication_pdfs/Future_of_the_First _Amendment_cx2.pdf, retrieved May 27, 2017). Suppose that the sample size was 1000 in each of the 2 years. Data consistent with summary values given in the paper are summarized in the accompanying table. Is there convincing evidence that the proportions falling into each of the response categories were not the same for high school students in 2004 and 2014?

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People should be allowed to burn or deface the American flag as a political statement Strongly Mildly Mildly Mildly Strongly Don't Agree Disagree Disagree know 110 110 Agree 2004 2014 630 660 80 80 70 100 70 90