A spinner had the numbers 1 to 4
The probability of spinning number 1 is 0.6
The probability of spinning a number 4 is 0.1
The probability of spinning a number 2 is as same as _
The probability of spinning a number 3 _
Calculate the probability of spinning a number 3
Please show accurate steps and answers. Thanks
Maths
2014-10-02 7:02 pm
回答 (3)
2014-10-03 4:51 am
✔ 最佳答案
'.' The probability of spinning number 2 & 3 is 1-0.6-0.1=0.3,The probability of spinning a number 3 is as same as number 2.'.the probability of spinning a number 3 is 0.3/2=0.15
參考: My Brain
2014-10-02 8:35 pm
Pr(number 2) 不可以是 = Pr(number 3) 嗎?
2014-10-02 7:19 pm
由於 Pr(number 2) 只可以是 0.1 或 0.6
但若是 0.6，則會造成加上所有數後大於1。
故此 as same as 4，即 Pr(number 2) = 0.1。
最後一格是 1 - 0.6 - 0.1 - 0.1 = 0.2
2014-10-03 00:28:41 補充：
HK~ 說得對，我疏忽了～
那應該有兩組答案。
^__^
但若是 0.6，則會造成加上所有數後大於1。
故此 as same as 4，即 Pr(number 2) = 0.1。
最後一格是 1 - 0.6 - 0.1 - 0.1 = 0.2
2014-10-03 00:28:41 補充：
HK~ 說得對，我疏忽了～
那應該有兩組答案。
^__^
收錄日期: 2021-04-15 16:42:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20141002000051KK00038