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Math Help - Tukey Method

  1. #1
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    Tukey Method

    An experiment was conducted to compare the strength of welds produced by four different welding techniques. Each technique was used to weld five pairs of metal plates. The average strengths for the five welds for each technique were:
    Technique: A B C D
    Mean:
    69 83 75 71
    The estimate of experimental error variance was
    MSE = 15 with 16 degrees of freedom.
    Apply the Tukey method to the data using an overall error rate of 0.05 in order to compare all pairs of treatments. Which treatments produce the same average strength?

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  2. #2
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    hey guys anyone out there that can give me ANY help I really need it!!!please!
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