A fair coin is tossed 10 times. Find the probability of getting 6 heads.
計法係
0.5^6x0.5^4x10C6
=0.205
但係我唔明點解要乘埋 tail 既probability同
10C6 既意思係...?
Probability
2013-02-13 10:29 pm
回答 (2)
2013-02-14 12:41 am
✔ 最佳答案
For 10 toss to get 6 heads, that means the other 4 toss must be tail. One possible outcome is : HHHHHHTTTT, probability will be (1/2)^6 (1/2)^4.However, the 6 Heads can be anywhere in the 10 toss, for example HTHTHTHTHH, total possible outcomes can then be 10C6.
So probability is 10C6 (1/2)^6(1/2)^4.
2013-02-14 12:27 am
0.5^6= 6heads
0.5^4= 4tails
10C6=10當中有6次係head
0.5^4= 4tails
10C6=10當中有6次係head
收錄日期: 2021-04-25 22:44:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130213000051KK00135