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Inspection Case Questions

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  • September 3, 2020 at 5:02 am #249717

    Fausto Galetto
    Participant

    A product has a probability p of being defective.

    The inspection system has a probability “alfa” of wrongly signaling a good product as defective.

    On the other end, the inspection system has a probability “beta” of wrongly signaling a defective product as good.

    1.    How could I find the mean number of inspections until a wrong signal?

    2.    How could I find the VARIANCE of the mean number of inspections until a wrong signal?

    THANKS in advance.

    0
    September 3, 2020 at 12:10 pm #249732

    Katie Barry
    ★ 10 Years ★
    Member

    @fausto.galetto You know how the forum works! :) What do YOU think? Why/why not? The iSixSigma audience isn’t here to do your work for you.

    1
    September 4, 2020 at 5:41 am #249745

    Fausto Galetto
    Participant

    @KatieBarry

    I did not expect that “”iSixSigma audience had to do MY work for ME“”.

    I expected some hints to afford the problem….

    We can have some causes of NO Reply:

    1. the case is not interesting
    2. the iSixSigma audience does not WANT to answer
    3. the iSixSigma audience does not KNOW HOW to answer
    4. ….
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    September 4, 2020 at 12:00 pm #249754

    Katie Barry
    ★ 10 Years ★
    Member

    @fausto.galetto If you lead with what you think and why/why not, you may get a reply. Otherwise, you likely won’t. It’s that simple.

    1
    September 5, 2020 at 4:04 am #249766

    Fausto Galetto
    Participant

    @KatieBarry

    It seems that your previous “Rules” are NOT applied to the other two questions:

    • Help with Homework Problem by  Karthik Dharmalingam
    • Bernoulli Distribution by  Fausto Galetto

    Let’s do not waste any more time…

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    September 5, 2020 at 6:42 pm #249775

    Katie Barry
    ★ 10 Years ★
    Member
    • Homework Problem–I didn’t say it was impossible to get a response. I said it was unlikely. In this instance, Robert was generous and replied before I had an opportunity to post and suggest the original poster share their opinion/thought processes first.
    • Bern0ulli Distribution–You clearly state your opinion before asking others for theirs.
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