試題詳解

20. Which of the following statements regarding detection limits (D.L.) are false: (1) Only ~1% of measurements of a blank are expected to exceed theD.L. (2) If the analyte concentration is right at the D.L., then one is only 50% confident to say that the sample does contain analyte. (3) If the analyte concentration is right at theD.L., then one is 99% confident to say that the sample does contain analyte. (4) Measurements showing results below D.L. can suggest the sample does not contain analyte. (5) The probability of being false positive is ~1% for samples containing no analyte. Your answer:
(A) 1,2,5
(B)1, 2, 4
(C)3,5
(D)2, 5
(E) 3,4