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Researchers randomly assigned plots of soybean crops to three pesticides, referred to here as A, B, and C. Here is a portion of software output
Researchers randomly assigned plots of soybean crops to three pesticides, referred to here as A, B, and C. Here is a portion of software output from ANOVA comparing the average yield (in bushels per acre) resulting from each pesticide. Statistics A B C Overall Sample Size 12 12 12 36 Mean 42.4 40.4 36.5 39.7 Standard Deviation 6.1 6.5 7.7 7.4 ANOVA Test statistic: 2.336 Left Tall Two-Tall Right Tall 1.0 0.8 0.6 0.4 0.2 10% 5% 1% 0.0 0.0 1.0 2.0 3.0 4.0 5.00.0 0.0 1.0 2.0 3.0 4.0 In the next question, answer all of the following. Label each answer with a question part. Theoretic distributions: o Normal o t with df o Chi-square with df o F with df for groups and df for error A. Choose a distribution from the list above and indicate clearly which distribution and how many degrees of freedom, if applicable. B. Check conditions for using this distribution. Explain specifically what you checked and indicate whether conditions are met. Indicate whether more information would be needed to check conditions and, if so, what you would need to know. C. State a conclusion of the test, in context and using nontechnical language. In this question, give only an estimate of the p-value from the graph above. Give a numeric value, to two decimal places, with no notation or labels. Express as a decimal, not a percent
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