Let p1 denote the probability that any particular code symbol is erroneously transmitted through a communication system. Assume that on different symbols, errors occur independently of one another. Suppose also that with probability p2 an erroneous symbol is corrected upon receipt. Let X denote the number of correct symbols in a message block consisting of n symbols. What is the probability distribution of X? 我自己翻的題意: 每個樣本參數皆互相獨立 p1 為錯誤的機率 p2 為錯誤發生後被更正的機率 X 為 n 個樣本中，事件為正確的樣本數量 不知道有沒有翻錯= =|| 想問各位這題是純粹在問 X 是屬於何種機率分佈? 還是說要把 X 的機率分佈算出來?? 另外這題是要用 b(x;n,p) 算，還是用 nb(x;r,p) ??? 感激不盡~~ --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.123.220.33 ※ xup6xu6:轉錄至看板 ask 11/09 01:07