置信

zhìxìn
  1. to believe (what sb claims) (usually used in the negative)
  2. (math.) confidence (interval etc)

CEDICT

math

Entry Composition

1 置 zhì
  1. to install
  2. to place
  3. to put
  4. to buy
2 信 xìn
  1. letter
  2. mail
  3. to trust
  4. to believe
  5. to profess faith in
  6. truthful
  7. confidence
  8. trust
  9. at will
  10. at random

classifier: 封