text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_222448_1 (percent_defective VARCHAR, sigma__with_15σ_shift_ VARCHAR)
  ### Question:
  When sigma (with 1.5σ shift) is 2.5, what percent is defective?
  ### Answer:
  SELECT percent_defective FROM table_222448_1 WHERE sigma__with_15σ_shift_ = "2.5"