Problem 2: Urn A contains 10 balls numbered 1-10. Urn B contains 1000 balls numbered 1-1000. Your friend picks a ball at random from one of the urns (but you don't know which). The ball she picks has the number 5 on it. What is the probability that the ball was drawn from Urn A?

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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Problem 2: Urn A contains 10 balls numbered 1-10. Urn B contains 1000 balls numbered
1-1000. Your friend picks a ball at random from one of the urns (but you don't know which). The
ball she picks has the number 5 on it. What is the probability that the ball was drawn from Urn
A?
Transcribed Image Text:Problem 2: Urn A contains 10 balls numbered 1-10. Urn B contains 1000 balls numbered 1-1000. Your friend picks a ball at random from one of the urns (but you don't know which). The ball she picks has the number 5 on it. What is the probability that the ball was drawn from Urn A?
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