Question

In Example 10, the coefficient of the manure-level indicator variable m is 1.96.
a. Explain why this coefficient is the estimated difference in mean corn yield between the high and low levels of manure, for each level of fertilizer.
b. Explain why the 95% confidence interval for the difference in mean corn yield between the high and low levels of manure is 1.96 ± 2.11(0.747).


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  • CreatedSeptember 11, 2015
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