[問題] 樣本平均數與標準差的分配
{X}n~N(μ,σ^2) iid
_ _
已知X和X_i-X獨立,但是課本接下來馬上就說
_ _2
因此X和(X_i-X)獨立
不知道為什麼這條式子會成立,希望可以有提示,謝謝!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.112.4.196
推
09/15 15:49, , 1F
09/15 15:49, 1F
→
09/15 22:43, , 2F
09/15 22:43, 2F
→
09/15 22:44, , 3F
09/15 22:44, 3F
→
09/15 22:45, , 4F
09/15 22:45, 4F
推
09/15 22:59, , 5F
09/15 22:59, 5F
→
09/15 23:00, , 6F
09/15 23:00, 6F
→
09/16 01:22, , 7F
09/16 01:22, 7F
→
09/16 09:13, , 8F
09/16 09:13, 8F
→
09/16 09:15, , 9F
09/16 09:15, 9F