[問題] 請強者解惑
2. There is a 50-50 chance that a queen carries the gene for hemophilia.If
she is a carrier then each prince has a 50-50 chance of having hemophilia.
The queen has three princes without disease.What is the probability the queen
is a carrier?If there is a fourth prince,what is the probability he will
have hemophilia?
我有做了,但是不知道對部隊
A:queen carries the gene for hemophilia
B:three princes without the hemophilia
C:the fourth prince
P(A|B)=P(B|A)P(A)/P(B)=(1/16*1/2)/1/8=1/4
P(C|A)=P(C intersect A)/P(A)=1/2
可以幫我看一下是否正確
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 68.33.16.11