Minimum detectable effect size for main outcomes (accounting for sample
design and clustering)
With 80% power, we can detect a 3 hour change in beliefs about hours worked per week with 434 students, given a pilot mean in the control group of 52.3 hours. We can detect an 8 percentage point change in the percent chance of attending the information session, given the pilot mean in the control group of 48.4 percent.