This article indicates 95% confidence for a cancer cluster https://www.motherjones.com/environment/2013/06/erin-brockovich-hinkley-california-junk-science/ htt

This article indicates 95% confidence for a cancer cluster https://www.motherjones.com/environment/2013/06/erin-brockovich-hinkley-california-junk-science/ https://www.motherjones.com/environment/2013/06/erin-brockov... "Other problems in Morgan’s work are not so common. In his first analysis from 1988 to 1993, Morgan actually found the cancer rate in Hinkley was 25 percent higher than in the surrounding counties. But he dismisses this cluster as a statistical mirage, a mere fluke. Other epidemiologists who looked at Morgan’s numbers at the Center’s request disagree. Statistically, there’s at least 95 percent certainty that the cluster is not a fluke"