Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 11 - Counting Methods and Probability Theory - 11.7 Events Involving And; Conditional Probability - Exercise Set 11.7: 51

Answer

$\frac{2}{3}$

Work Step by Step

The probability of event B, assuming that the event A has already occurred, is called the conditional probability of B, given A. This probability is denoted by P(B|A). E: An even number, given that a yellow disk is selected. A:{3} There are 3 yellow disks. B: {2} There are two yellow disks with even numbers: 2 and 4. Thus, we have: P(B|A) = $\frac{2}{3}$
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