Question: Consider the electronic inverter data in Exercise 12-66 and 12-67. Define the response and regressors variables as in Exercise 12-67, and delete the second observation

Consider the electronic inverter data in Exercise 12-66 and 12-67. Define the response and regressors variables as in Exercise 12-67, and delete the second observation in the sample.
(a) Use all possible regressions to find the equation that minimizes Cp.
(b) Use all possible regressions to find the equation that minimizes MSE.
(c) Use stepwise regression to select a subset regression model.
(d) Compare the models you have obtained.

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