Posted by **Lori** on Wednesday, September 22, 2010 at 11:12pm.

Box A contains 4 red and 6 blue balls. Box B contains 5 red and 10 blue balls. A box is selected at random and a ball is drawn. Find the probability that the ball is blue, given that it came from Box B.

- statistics -
**TutorCat**, Thursday, September 23, 2010 at 10:49am
There's 1/2 chance that you'll choose Box B, and there's 10/15 chance that it'll be a blue ball. To find the probability, multiply the two numbers.

- statistics -
**Lori**, Thursday, September 23, 2010 at 5:12pm
That is what I got on my quiz--answer he told me was 10/19??

## Answer this Question

## Related Questions

- Statistics - Box A contains 4 red and 6 blue balls. Box B contains 5 red and 10...
- statistics - Box A contains 4 red and 6 blue balls. Box B contains 5 red and 10 ...
- math - A box contains 8 blue balls and 2 red balls. Three balls are selected ...
- stats - A box contains 10 red balls and 20 blue balls. Three balls are selected ...
- Statistics - I have two boxes with balls; box #1 and box #2. Box #1 has 3 red ...
- Probability again - A box contains 6 red balls, 4 blue balls, and 2 green balls...
- Conditional Probability - A box contains 1 green ball, 2 blue balls, and 3 red ...
- math - John has a box that contains one red ball and one blue ball. Every minute...
- Math - John has a box that contains one red ball and one blue ball. Every minute...
- statistics - A box contains 3 white and 5 black balls. Four balls are drawn at ...