Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_222448_1 ( sigma__with_15σ_shift_ VARCHAR, percent_defective VARCHAR )

### Question ###
What is the sigma (with 1.5 shift) when there are 69% defective?

### Accurate SQL ###

SELECT sigma__with_15σ_shift_ FROM table_222448_1 WHERE percent_defective = "69%"