“Significantly” means the outcome is very unlikely by chance.
Bradley 11 [Dr. James Bradley, (Professor of mathematics emeritus, Calvin College), November 2011, "Why Dembski’s Design Inference Doesn’t Work," BioLogos, https://www.fliedner.es/media/modules/editor/cienciayfe/docs/biologos/41-bradley_scholarly_essay.pdf, accessed 5-20-2024] // enjen
“Significantly” means that the difference was large enough to be very unlikely by chance. When the testing period was complete, the rate of polio incidence was 28 per 100,000 children in the vaccinated communities and 71 per 100,000 children in the control communities. Statisticians were able to calculate that the probability of this great a difference happening by chance was less than one in a million. Thus they concluded that the vaccine had been effective. Due to the Salk and later Sabin vaccines, polio has today been eliminated in most of the world.