試題詳解

70. Analysis of a bottle of 100 mg vitamin C tablets yields an average vitamin C content of 99.8 mg, with a standard deviation of ±0.3 mg. Assuming Gaussian statistics, which of the following is true?
(A) None of the tablets contains less than 99.5 mg of vitamin C.
(B) 68% of the tablets contain between 99.5 and 100.1 mg of vitamin C.
(C) 97% of the tablets contain between 99.5 and 100. 1 mg of vitamin C.
(D) All of the tablets contain less than 100 mg of vitamin C.
(E) The average value is incorrect.