Question: Application Exercise: A sample of soy bean plots were divided into three equal groups in a completely randomized design, and each group received a different


Application Exercise: A sample of soy bean plots were divided into three equal groups in a completely randomized design, and each group received a different formulation of a selective weed killer (wk). The researchers measured the area of crop damage inflicted by each formulation. The aim is to choose the weed killer formulation that inflicts the least amount of crop damage. What can the researchers conclude with an a of 0.01? wk 1 wk 2 wk 3 11 24 27 10 14 38 13 20 37 10 29 22 15 19 18 17 14 30 10 21 24 a) What is the appropriate test statistic? ---Select--- v b) Obtain/compute the appropriate values to make a decision about Ho. Critical Value = Test Statistic = Decision: ---Select---c} Compute the corresponding effect size{s]| and indicate magnitudefs}. Effect Size = :l; Magnitude: d} Make an interpretation based on the results. 0 At least one weed killer formulation differed on the amount of crop damage. 0 None of the weed killer formulations differed on the amount of crop damage. e} Regardless of the H0 decision in h], conduct Tukev's post hoc test for the following comparisons: ; vs. a: difference = ,: signicant: ; vs. ;: difference = : signicant: f} Regardless of the H0 decision in b}, conduct Scheffe's post hoc test for the following comparisons: ; vs. 3: test statistic = ; signicant: ; vs. ;: test statistic = ; signicant
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