CREATE TABLE table_2575 ("Sigma level" FLOAT, "Sigma  ( with 1.5\\u03c3 shift ) " CLOB, "DPMO" CLOB, "Percent defective" CLOB, "Percentage yield" CLOB, "Short-term C pk" CLOB, "Long-term C pk" CLOB)

When sigma (with 1.5 shift) is 2.5, what percent is defective?
SELECT "Percent defective" FROM table_2575 WHERE "Sigma (with 1.5\u03c3 shift)" = '2.5'
SELECT "Percent defective" FROM "table_2575" WHERE "Sigma (with 1.5\u03c3 shift)" = '2.5'