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Statistics

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What are the steps espoused by Applied Statistics in Business and Economics for formal hypothesis testing? Explain why the sequence is important. What might happen if the hypothesis test is performed before the researcher has decided on the significance level?

  • Statistics -

    Twenty students randomly assigned to an experimental group receive an
    instructional program; 30 in a control group do not. After 6 months, both groups
    are tested on their knowledge. The experimental group has a mean of 38 on the
    test (with an estimated population standard deviation of 3); the control group
    has a mean of 35 (with an estimated population standard deviation of 5). U

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