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January 30, 2015

January 30, 2015

Posted by **rose** on Saturday, October 3, 2009 at 1:30pm.

- statistics -
**Reiny**, Saturday, October 3, 2009 at 2:02pmnumber of defective stereos = .01(250) + .1(950

= 2.5 + 95

= 97.5

so prob that the defective one is from A

= 2.5/97.5 = .02564

- statistics -
**Reiny**, Saturday, October 3, 2009 at 2:10pmI did not know about Bayes Theorem, and just used common sense in my solution.

I looked it up and found this rather confusing description of it

http://en.wikipedia.org/wiki/Bayes%27_theorem

I don't think my old brain feels up to learning more about it, lol

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