Over the past year, the Wisconsin Regional Sewage District (WRSD) has received considerable negative attention over incidents in which untreated sewage has been released into Lake Michigan. Th e director of WRSD argues that heavy rain, rather than actions taken by the district, is to blame for sewage release incidents. To prove her point, the director regresses the number of gallons of untreated sewage released into the lake per month (YUCK) on the total rainfall per month (RAIN) in inches (the data cover the last 72 months). Do the regression results support the director’s claims?