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Math Help - Super stuck on Type 1 and Type 2 errors

  1. #1
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    Jan 2010
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    Angry Super stuck on Type 1 and Type 2 errors

    Hi everyone,

    I used to think maths was my strong point, however we've been doing statistics at school recently and I am useless at it.

    I have a question which asks me to calculate the type 1 & 2 error for a question with the following data:

    I know the definitions of type 1 and 2 errors, just have no idea how to work them out

    Reported probability of success: 0.55

    Sample size: 30
    Significance level of test: 5%

    For the calculating type 2 error question it says that the actual probability of success is 0.6

    Any help will be really appreciated, this section of maths has really made me prefer economics

    Oli


    EDIT: After an incredibly painful ordeal I have managed to get the same answer for the probability of a Type 1 error as in the back of the book. Now onto type 2...
    Last edited by oliii; January 29th 2010 at 01:28 PM.
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