Determine the exact expression for 2(M) used in AIC/BIC computations for a standard linear model Recall that the OLS solution for is equivalent to the MLE solution for . You will need to derive the MLE of 2.

a)Write the likelihood function of your data under the assumption that the errors are

independent with mean 0 and variance 2.

b)Use calculus to solve for the MLE of 2.

c) Using the MLE for and 2, simplify 2(M).