Example There are 3 red balls and 4 blue balls in a box. Two draws are taken from the box with replacement. Find the prob- ability of taking a blue ball in the second draw given that the first draw is blue (or red).

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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Conditional Probability

Example There are 3 red balls and 4 blue balls in a box. Two
draws are taken from the box with replacement. Find the prob-
ability of taking a blue ball in the second draw given that the
first draw is blue (or red).
Transcribed Image Text:Example There are 3 red balls and 4 blue balls in a box. Two draws are taken from the box with replacement. Find the prob- ability of taking a blue ball in the second draw given that the first draw is blue (or red).
Expert Solution
Step 1: Define the initial Variables


Number of red balls = 3

Number of blue balls = 4

Total balls = 3+4 = 7


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