The Student Room Group

Tree diagrams question

https://www.quora.com/profile/Bravewarrior/p-160320592
Here is the question with its solution. I am stuck on part c. Some help would be greatly appreciated!
Reply 1
Original post by pigeonwarrior
https://www.quora.com/profile/Bravewarrior/p-160320592
Here is the question with its solution. I am stuck on part c. Some help would be greatly appreciated!

Which bit are you unsure about? The numerator is the joint probability so both green and the denominator is the probility of the second balll being green which is the sum of the two branches where the second ball is green (part b). Then its just the conditional rule.
(edited 1 month ago)
Original post by mqb2766
Which bit are you unsure about? The numerator is the joint probability so both green and the denominator is the probility of the second balll being green which is the sum of the two branches where the second ball is green (part b). Then its just the conditional rule.

Yup, I see it now thank you so much! 😀

Quick Reply

Latest