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Thread: Probability

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    Probability




    25 blocks arranged randomly in a circle: 15 red and 10 blue.
    X is the Number of blue blocks that has red blocks on both sides.
    What is the expected value of X?
    What is the variance of X?

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    Re: Probability

    Hi! We are glad that you posted here! This looks like a homework question though. Our homework help policy can be found here. We mainly just want to see what you have tried so far and that you have put some effort into the problem. I would also suggest checking out this thread for some guidelines on smart posting behavior that can help you get answers that are better much more quickly.
    I don't have emotions and sometimes that makes me very sad.

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    Re: Probability

    Indeed this is a home work question
    I do not really know how to approach this question because i am a bad student

    Please help me

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    Re: Probability


    For starters read the links I posted and follow the guidelines as requested.
    I don't have emotions and sometimes that makes me very sad.

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