我有啲懷疑老師唔識英文

我咪話1/3班人係會同你講1/13983816 (數學係咁計 應該)
事實上係人都會話你知係100% 狗衝去買啦

答案點會無影響

我覺得2你係諗錯咗

https://towardsdatascience.com/conditional-probability-with-python-concepts-tables-code-c23ffe65d110


The probability of at least one children being a girl is:

(1/4) + (1/4) + (1/4) = 3/4

So:

P(1st Child = Girl, 2nd Child = Girl) / P(“at least one child is a girl”)(1/4) / (3/4) = (1/4) * (4/3) = (4/12) = 1/3 or roughly 33%

#478

#478

BB BB GB BG GG GG
已知有一個係B
rule out GG
得番 BB BB GB BG
4個有2個符合
唔係應該1/2?

利申 唔識

因為數學上都係100%
邊個唔同意
唔該用數學實際說服我
試比我睇點樣唔係100%

同我條equation 有咩分別 你judge 下佢？

.

如果用conditional probability嘅諗法 首先要搵到淨返1-6嘅可能性 我諗應該就係你打個舊數 然後再搵係1-6入面出1-6嘅可能性(100%) 兩舊×埋
所以我話數學係呢到都幾on9 有指請指正

你排埋先後的而且確係咁

識睇 俾負皮

你啲數字鳩填就當自己解釋咗

P(1-6 | No 7-49) = P(1-6 | 1-6) = 1

都話已知唔會出

你有冇睇架……人地解釋咗，睇outcome2啦

個分別係問法

The probability that Joe's sibling is a brother is 100%. If your neighbor has 2 children and one of them is a son named Joe, then the other child must be a brother.

"Hence, as stated, the problem is incapable of solution. Indeed, even when the usual assumption about equally likely gender probabilities is made, we still need to make additional assumptions before a solution can be given."

本書都咁講啦, 都唔明點解仲可以有人堅持"1/3岩1/2錯"

搵到更詳細的解釋，請睇下面網頁內的outcome 2
題目只係仔同女調翻轉

https://towardsdatascience.com/conditional-probability-with-python-concepts-tables-code-c23ffe65d110

The probability of at least one children being a girl is:

(1/4) + (1/4) + (1/4) = 3/4

So:

P(1st Child = Girl, 2nd Child = Girl) / P(“at least one child is a girl”)(1/4) / (3/4) = (1/4) * (4/3) = (4/12) = 1/3 or roughly 33%

前設係sibling 唔係 男 就係 女
組合只係得 BB, BG, GG（兩男、一男一女、兩女）
要兩個都係B 啫係1/3

chatgpt

{Bj B. BBj. GBj. BjG. }

做咩唔計joe係大佬/細佬，又計姊/妹

P(另一個係仔， given 1個係仔)= P（兩仔｜1個仔）


=P(仔and 仔）/P(仔）

=0.5*0.5/0.5

=0.5

你用中文列哂所有兩個仔女當中一個joe一個係你既可能性

假設男女機會均等。
Your neighbour has 2 children.
男男 男女 女男 女女
What is the probability that 兩個都係仔
1/4

What is the probability that 兩個都係仔 given that you know 其中一個係仔
1/3

Conditional Prob

Ai 冇理由錯啦掛