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Math Help - Testing claims

  1. #1
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    Testing claims

    For part (a) i know what the parameter is the mean difference in sensitivity. Although I don't know what the null hypothesis is.
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  2. #2
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    Re: Testing claims

    Hey asilvester635.

    Hint: If the difference is positive, then the product (eye black) makes a difference. Think about this with regard to the hypothesis.
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