80% of my students will have signed up to prediction book and make eight or more predictions by the end of May

Created by Ben Doherty on 2011-02-16; known on 2011-05-30; judged right by DavidPercival on 2011-03-01.

• Ben Doherty estimated 40% on 2011-02-16
• DavidPercival   judged this prediction right on 2011-03-01.