What is conditional probability? f we know that P(A) = 1/2 , that P(An B) = 1/4, and that P(A|B) = 3/4, what is P(B) ? Write your answer as a fraction of integers. For example, if the answer were 17/20 then enter 17/20 with no spaces or other symbols. You may reduce the fra actors common to the numerator and denominator but you do not need to do this. %3D

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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What is conditional probability?
If we know that P(A) = 1/2 , that P(An B) = 1/4, and that P(A|B) = 3/4 , what is P(B) ?
Write your answer as a fraction of integers. For example, if the answer were 17/20 then enter 17/20 with no spaces or other symbols. You may reduce the fraction by cancelling
factors common to the numerator and denominator but you do not need to do this.
Transcribed Image Text:What is conditional probability? If we know that P(A) = 1/2 , that P(An B) = 1/4, and that P(A|B) = 3/4 , what is P(B) ? Write your answer as a fraction of integers. For example, if the answer were 17/20 then enter 17/20 with no spaces or other symbols. You may reduce the fraction by cancelling factors common to the numerator and denominator but you do not need to do this.
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