55. An urn (i a)B, contains 2 white and 3 black balls and another urn Bz contains 3 white and 4black balls. One urn is selected at random and a ball is drawn from it. If the ball drawn is foundblack,find the probability that the urn chosen was B1а. 3/7b. 20/41C. 4/7d. 21/41

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Answered: 55. An urn (i »)B, contains 2 white and…

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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55. An urn (i »)B, contains 2 white and 3 black balls and another urn B2 contains 3 white and 4 black balls. One urn is selected at random and a ball is drawn from it. If the ball drawn is found black, find the probability that the urn chosen was B1 а. 3/7 b. 20/41 C. 4/7 d. 21/41