CREATE TABLE table_262508_1 (joined VARCHAR, enrollment VARCHAR, location VARCHAR)

How many joined when the enrollment was 1150 in Sioux City, Iowa?
SELECT joined FROM table_262508_1 WHERE enrollment = 1150 AND location = "Sioux City, Iowa"
SELECT "joined" FROM "table_262508_1" WHERE "Sioux City, Iowa" = "location" AND "enrollment" = 1150