CREATE TABLE table_24811 ("Tournament" FLOAT, "Conference" TEXT, "Championship Game Opponent" TEXT, "Score" TEXT, "Location" TEXT, "Head Coach" TEXT)

What is the conference when Ferris State is the championship game opponent?
SELECT "Conference" FROM table_24811 WHERE "Championship Game Opponent" = 'Ferris State'
SELECT "Conference" FROM "table_24811" WHERE "Championship Game Opponent" = 'Ferris State'