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Math Help - need help in statistics questions

  1. #1
    Newbie
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    Australia
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    need help in statistics questions

    need help in statistics questions-lalal.jpg




    Find the z-values which give the following right hand tail areas.

    1. area = 0.9881 (2 dp)
    2. area = 0.9435 (2 dp)
    3. area = 0.7412 (2 dp)
    4. area = 0.1420 (2 dp)
    5. area = 0.0121 (2 dp)
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  2. #2
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    Re: need help in statistics questions

    please help! thanks!!
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  3. #3
    Senior Member
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    Re: need help in statistics questions

    In 1,2,3 z is obviously negative but to get its numerical value imagine the diagram turned over so that looking for those areas in the tables will give you that.
    In 4 and 5 subtract given area from 1 and look for the z related to that area.
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