My Math Forum Bayes's Theorem Question Answer Check

 January 3rd, 2009, 06:07 PM #1 Newbie   Joined: Dec 2008 Posts: 2 Thanks: 0 Bayes's Theorem Question Answer Check An appliance store purchases electric ranges from 2 companies. From company A, 500 ranges are purchased, and 2% are defective. From company B, 850 ranges are purchased, and 2% are defective. Given that a range is defective, find the probability that it came from company B. My Answer= .63 Answer in Textbook= .531
 January 4th, 2009, 09:04 PM #2 Global Moderator     Joined: Nov 2006 From: UTC -5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms Re: Bayes's Theorem Question Answer Check I agree with your answer. There are 17 and 10 defective ranges, so 17/27 is the probability required.
 January 6th, 2009, 06:15 AM #3 Newbie   Joined: Dec 2008 Posts: 2 Thanks: 0 Re: Bayes's Theorem Question Answer Check Thanks for your help

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