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Math Help - Statistics question P-values

  1. #1
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    Statistics question P-values

    Does anyone know how to calcluate P-value? I have several questions that I have to calculate the p-value of the given test statistic

    for example t=2.05; n=20
    I have no idea how to get the p-value. My book does not explain this very well at all.
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  2. #2
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    Quote Originally Posted by rhonest View Post
    Does anyone know how to calcluate P-value? I have several questions that I have to calculate the p-value of the given test statistic

    for example t=2.05; n=20
    I have no idea how to get the p-value. My book does not explain this very well at all.

    I assume you want to find:

    p=Cu(T<t)

    where Cu(.) denotes the cumulative distribution of the statistic (RV) in question, and from what you write this is the t-statistic (distribution) with 19 (that is n-1) degrees of freedom.

    You evaluate this by looking it up in a table of the distribution, or use a software package or tool that will evaluate it.

    see: t Distribution

    CB
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