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Say a gossip magazine editor is paying 2 sources to gather information about a particular celebrity. From his past experience the editor knows source# 1 is right 80% of time, and source# 2 is right 65% of the time.

Now, for a particular case, the editor wants to be sure at least 95%. Say the source #1, gives the editor some information piece x. What is the end probability in the following cases:

a. source# 2 also gives same information b. source# 2 gives a different information about same thing than what source#1 gave.

In both above cases, what is the probability of the info from source #1 being correct?

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    What did you try? Where are you stuck? What similar problems can you solve?2012-05-04

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