討論串[理工] [機率]-機率
共 13 篇文章
內容預覽:
Let the random variable X be the number of days that a certain patient needs. to be in the hospital. Say X has the p.m.f.. 5-x. f(x)= ------- x=1,2,3,
(還有125個字)
內容預覽:
1.Suppose there are 3 defective items in a lot of 50 items. A sample. of size 10 is taken at random and without replacement. Let X denote the. number
(還有41個字)