Bayes' Theorem: Suppose that E and F are two events from a sample space S such that p(E) 0 and p(F) #0. Then: Question: P(F\E)= P(EF)P(F) P(E\F)P(F)+P(EF)P(F) We have two boxes. The first box contains two green balls and seven red balls. The second contains four green balls and three red balls. Bob selects one of the boxes at random. Then he selects a ball from that box at random. If he has a red ball, what is the probability that he selected a ball from the first box. Let E be the event that Bob has chosen a red ball and F be the event that Bob has chosen the first box. The questions is: To find P(FIE) by using Bayes' theorem.

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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Bayes' Theorem: Suppose that E and F are two events from a sample space S such that
p(E)0 and p(F) 0. Then:
Question:
P(FE)=
P(EF)P(F)
P(EF)P(F)+P(EF)P(F)
We have two boxes. The first box contains two green balls and seven red balls. The second
contains four green balls and three red balls. Bob selects one of the boxes at random. Then
he selects a ball from that box at random. If he has a red ball, what is the probability that
he selected a ball from the first box.
Let E be the event that Bob has chosen a red ball and F be the event that Bob has chosen
the first box.
The questions is: To find P(FIE) by using Bayes' theorem.
Transcribed Image Text:Bayes' Theorem: Suppose that E and F are two events from a sample space S such that p(E)0 and p(F) 0. Then: Question: P(FE)= P(EF)P(F) P(EF)P(F)+P(EF)P(F) We have two boxes. The first box contains two green balls and seven red balls. The second contains four green balls and three red balls. Bob selects one of the boxes at random. Then he selects a ball from that box at random. If he has a red ball, what is the probability that he selected a ball from the first box. Let E be the event that Bob has chosen a red ball and F be the event that Bob has chosen the first box. The questions is: To find P(FIE) by using Bayes' theorem.
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