# Question: Refer to Exercise 12 38 a Write the estimated least square quadratic line

Refer to Exercise 12.38

a. Write the estimated least-square quadratic line for the model without a crop difference.

b. Write the estimated least-square quadratic line for the model for each of the three crops.

c. Do the three equations in part (b) appear to be different?

a. Write the estimated least-square quadratic line for the model without a crop difference.

b. Write the estimated least-square quadratic line for the model for each of the three crops.

c. Do the three equations in part (b) appear to be different?

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