What is the mean number of goals against when there were fewer than 8 games played?
CREATE TABLE table_name_39 (
    goals_against INTEGER,
    games_played INTEGER
)
SELECT AVG(goals_against) FROM table_name_39 WHERE games_played < 8
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the mean number of goals against when there were fewer than 8 games played? ### Input: CREATE TABLE table_name_39 (
    goals_against INTEGER,
    games_played INTEGER
) ### Response: SELECT AVG(goals_against) FROM table_name_39 WHERE games_played < 8