Question: 20 Use software with Table 12.11, analyzed in Section 12.5. a) Fit the no interaction model, and verify the results given there. b) Fit the

20 Use software with Table 12.11, analyzed in Section 12.5.

a) Fit the no interaction model, and verify the results given there.

b) Fit the interaction model. Compare SSE for this model to SSE for the no interaction nodel. Show how the difference betw cen these values relates to the partial sum of squares for testing interaction.

c) Using the prediction equation for the interaction model. find the six estimated cell neans, and compare them to the sample means (Note: The model uses six parameters to summarize six means, so it has a perfect fit)

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