Vermont maple sugar producers sponsored a testing program to determine the benefit of a potential new...

Vermont maple sugar producers sponsored a testing program to determine the benefit of a potential new fertilizer. A random sample of maple trees in Vermont were chosen and treated with one of three levels of fertilizer (low, medium, and high). The trees were chosen to be in three different climatic zones (southern, central, and northern). The experiment was complete and balanced with three replicates per treatment combination. The results were entered into Minitab with the following results:

a. Determine the value of R2 .

b. Is there interaction between fertilizer and zone? (Equivalently, is the additive model plausible?) State the P-value.

c. Does sap production vary with climatic zone? State the P-value.

d. Does sap production vary with level of fertilizer? State the P-value

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orchestra answered 1 year ago

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