Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Sufiyancs
Group Title
This question is related to probability, please help ASAP!!!
Bag A contains 3 red balls and 3 blue balls.
Bag B contains 1 red ball and 3 blue balls.
Q: a ball is taken at random from bag A and placed in bag B. Then a ball is chosen from bag B. What is probability that the ball taken from bag B is red... Explain the logic... i know the answer but i dont know the logic behind it please help
 2 years ago
 2 years ago
Sufiyancs Group Title
This question is related to probability, please help ASAP!!! Bag A contains 3 red balls and 3 blue balls. Bag B contains 1 red ball and 3 blue balls. Q: a ball is taken at random from bag A and placed in bag B. Then a ball is chosen from bag B. What is probability that the ball taken from bag B is red... Explain the logic... i know the answer but i dont know the logic behind it please help
 2 years ago
 2 years ago

This Question is Closed

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
What's the probability that the ball you remove is red if you added a red ball from bag A?
 2 years ago

Sufiyancs Group TitleBest ResponseYou've already chosen the best response.0
am i right? @Jemurray3
 2 years ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
Yes, that's right. What's the probability that the ball you remove is red if you added a blue ball from bag A?
 2 years ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
Lastly, what's the probability that you picked a red marble from bag A? Or a blue one?
 2 years ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
Okay. So the two ways you can end up with a red marble at the end are: (1) Move a red one from bag A to bag B, and then pick a red one from bag B (2) Move a blue one from bag A to bag B, and then pick a red one from bag B
 2 years ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
The probability of the first one is (1/2) * (2/5) and the probability for the second one is (1/2) * (1/5). Since both sequences give us a red one at the end, you add the probabilities to get the final answer.
 2 years ago

Sufiyancs Group TitleBest ResponseYou've already chosen the best response.0
yea i know that but the part i didnt understand is why are we multiplying 1/2 with each possibility
 2 years ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
Because that's the probability of choosing a red or blue marble from bag A to begin with.
 2 years ago

Sufiyancs Group TitleBest ResponseYou've already chosen the best response.0
ok its is but why multiplying
 2 years ago

Sufiyancs Group TitleBest ResponseYou've already chosen the best response.0
@cwrw238 read and just answer my last comment plz
 2 years ago

Sufiyancs Group TitleBest ResponseYou've already chosen the best response.0
@jim_thompson5910 read and just answer my last comment plz
 2 years ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.2
If you want the probability that you have event A and also event B, you multiply the respective probabilities.
 2 years ago

Sufiyancs Group TitleBest ResponseYou've already chosen the best response.0
ohh thanx it was very helpful @Jemurray3
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.