Refer to Exercise 11 24 Fit a regression model relating yield
Refer to Exercise 11.24. Fit a regression model relating yield to the absolute deviation from the ideal planting date, that is, x = | D|.
a. Compute the estimated linear regression model  = β0 + β1x.
b. Estimate σ2e.
c. Estimate the standard error of β1.
d. Place a 95% confidence interval on β1.
e. Test the hypothesis that there is a linear relationship between yield per acre and absolute deviation from the ideal planting date. Use a = .05.
In exercise
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