1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Statistics, Probability, OR equation

  1. Jul 6, 2011 #1
    1. The problem statement, all variables and given/known data

    An appliance store purchases electric ranges from two companies. From company A, 600 ranges are purchased, and 5% are found to be defective. From company B, 300 ranges are purchased, and 8% are found to be defective. Given that a range is defective, find the probability that it came from company A.

    2. Relevant equations

    (work shown below) use "OR" equation

    3. The attempt at a solution

    (600)(.5) - (300)(.8) = 60
  2. jcsd
  3. Jul 6, 2011 #2
    your answer is wrong..

    use bayes theorem
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook