Question

Refer to Exercise 17.10. Suppose the four chemicals were randomly selected from the hundreds of different chemicals used to control fire ants. The researcher was interested in whether the effectiveness of a chemical to control fire ants varied across different environments.
In exercise
a. Write an appropriate model for this situation. Indicate how the conditions placed on the terms in the model differ from the conditions placed on the model used when the chemicals were the only chemicals of interest to the researchers.
b. Construct the AOV table and test all relevant hypotheses.
c. Compare the conclusions and inferences in this problem to those of Exercise 17.10.


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  • CreatedNovember 21, 2015
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