In the first box, there are 4 white and 7 black balls. In the second box, there are 3 white and 6 black balls. A ball is randomly chosen from the first box and transferred to the second box, and then a ball is randomly chosen from the second box and returned to the first box.   (a) Find the probability that, after all this, we draw a white ball from the first box.   (b) If a black ball is drawn from the first box after the transfers, what is the most likely composition of the first box

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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In the first box, there are 4 white and 7 black balls. In the second box, there are 3 white and 6 black balls. A ball is randomly chosen from the first box and transferred to the second box, and then a ball is randomly chosen from the second box and returned to the first box.

 

(a) Find the probability that, after all this, we draw a white ball from the first box.

 

(b) If a black ball is drawn from the first box after the transfers, what is the most likely composition of the first box

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