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March 30, 2017

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A coin is biased so that a head is twicw as likely to occur as a tail. Suppose the coin is tossed three times.
What is the probality of getting at exactly two tails

  • maths - ,

    p tails = 1/3
    1/3 * 1/3 * 1/3 = 1/27

  • maths - ,

    what is the disadvanatage of using variance as a measure of dispersion

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