A jar contains 6 red marbles, numbered 1 to 6, and 10 blue marbles numbered 1 to 10. a) A marble is chosen at random. If you're told the marble is blue, what is the probability that it has the number 5 on it? b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 7 on it, what is the probability the marble is blue?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 6ECP: In Pennsylvania’s Cash 5 game, a player chooses five different numbers from 1 to 43. If these five...
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A jar contains 6 red marbles, numbered 1 to 6, and 10 blue marbles numbered 1 to 10.

a) A marble is chosen at random. If you're told the marble is blue, what is the probability that it has the number 5 on it?


b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 7 on it, what is the probability the marble is blue?
  

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