Margin of error and adult education: According to a report by Public Agenda and the Kresge Foundation, online education is popular among adults planning to return to university (2013). "The majority (73 percent) of adult prospective students want to take at least some classes online, and nearly 4 in 10 (37 percent) say it is absolutely essential for them that their future school offer online classes" (p. 25). The margin of error was reported to be 4.27.

The first interval estimate would be. So, between % and % of respondents indicated that they planned to take online classes.