21.6 Are students engaged in school? Results from a summer 2010 Gallup Student Survey reveal that 37% of students in the 5th through 12th grades feel either not engaged or actively disengaged in school. The report of this sample survey of 642 students aged 10 to 18 stated that, with 95% confidence, the margin of sampling error was 4.94%. Explain to someone who knows no statistics what the phrase "95% confidence" means in this report.