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    for this exam do we need to know the formulas for t test chi squared and standard deviation or will we be given them?

    thanks
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    I'm not sure, I was wondering that last night. I don't have a clue how to do standard deviation!
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    Some other things I'm stuck with are:

    What are the biological principles in the treatment of water for drinking?
    What are the properties of soil that affect plant growth?
    How do you reclaim land rendered derelict by coal waste?
 
 
 
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Updated: June 22, 2005
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