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Interpreting a P-value

  1. Mar 3, 2013 #1
    1. question.jpg


    3. I solved for t distribution = (.03 - 0)/(.1/√25) = .15
    P - Value = 2P(T ≥ .15) = 2(.441) = .882. So I got No but instead we fail to reject H0 because 0.882 > .05 (.005 is the typical significance level). Is this correct and would it be a correct interpretation?
     
  2. jcsd
  3. Mar 3, 2013 #2

    mfb

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    2016 Award

    Staff: Mentor

    I am surprised that s does not have a unit.

    0.882 > 0.05 (or whatever you want to use), so we don't reject H0.
    The large p-value shows that the result is very close to the "prediction" based on H0.
     
  4. Mar 9, 2013 #3
    Thank You!
     
  5. Mar 9, 2013 #4
    And do you know in words what that p-value means?
     
  6. Mar 12, 2013 #5
    The probability of attaining a test statistic.
     
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