CREATE TABLE table_24775967_1 (notability_profession VARCHAR2, season VARCHAR2, finish VARCHAR2)

What was the profession of the celebrity who was featured on season 15 and finished 7th place?
SELECT notability_profession FROM table_24775967_1 WHERE season = 15 AND finish = "7th"
SELECT "notability_profession" FROM "table_24775967_1" WHERE "7th" = "finish" AND "season" = 15