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    mine75's Avatar
    mine75 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Aug 23, 2012, 08:53 PM
    defect probability in a group
    A sample of 1 defective chip from a sample of 6. How should I formulate the probability for the following scenario.
    * Only maximum of 2 defective chips out of the 4 groups
    * Each group will contain 8chips
    * Only allow to have maximum of 1 defective chip in a group instead

    I hv no idea how to write a probability for this... A tips from expert will be helpful.

    Thanks.
    Luc
    mine75's Avatar
    mine75 Posts: 2, Reputation: 1
    New Member
    		  
    #2

    Aug 23, 2012, 08:55 PM
    I making amenment to the question :(

    How should I formulate the probability for the following scenario.
    * Only maximum of 2 defective chips out of the 4 groups
    * Each group will contain 8chips
    * Only allow to have maximum of 1 defective chip in a group instead

    I hv no idea how to write a probability for this... A tips from expert will be helpful.

    Thanks.
    Luc
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #3

    Aug 23, 2012, 11:29 PM
    It is difficult to understand what's really happening here...

    1. Groups are mentioned now which weren't mentioned at all.
    2. Group again...
    3. And again...

    In any case, you should be using binomial distribution, or probability tree to make things easier.
    Chris-infj's Avatar
    Chris-infj Posts: 31, Reputation: 4
    Junior Member
    		  
    #4

    Aug 26, 2012, 12:20 PM
    Are you French, Luc? If so, check this out:

    Binôme de Newton. Loi binômiale et fonction de répartition

    Anyway, yes, it is the binomial distribution.
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