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There is a group of balls, either red or blue. The number of red balls is not necessarily the same as blue balls.

We have 2 boxes, A and B. We are to assign the balls to the box. Each ball has a probability P that will be assigned to box A and 1-P to box B. This probability P varies for different balls.

After the assignment is done, we are to get a ball from the box A. What is probability that the ball I get is red (and similarly blue)?

2006-09-29 00:14:51 · 2 answers · asked by superfifa2006 1 in Science & Mathematics Mathematics

2 answers

Probability is not depend on p.
Assume p is 0.3. It means 30% of balls either red or blue goes to the box A. Just that and nothing more. It hasn't any relation whit the probability that the ball you get is red.
But at first place the number of red balls and blue balls is important.
If the rate of red balls to blue balls is 2 to 3 for example, so we expect that we see 2 red balls for every 3 blue balls in the box A and box B.(no matter what is p)
So the probability depend on the number of red balls and blue balls.
Sorry for my English.

2006-09-29 01:10:18 · answer #1 · answered by Mamad 3 · 0 0

I don't think this question is possible to answer.

We don't have the number of red and blue balls and there is no way for us to find out.

2006-09-29 14:25:50 · answer #2 · answered by Tsuki 2 · 0 0

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