13. 1f' the random vuriable X is exponentially distributed, then tbe mean of X will be:(A) grea
問題詳情
13. 1f' the random vuriable X is exponentially distributed, then tbe mean of X will be: (A) greater than the median. (B) less than the median. (C) equal to tbe median. (D) Cannot tell； the answer depends on what λ is.