Question: I need to use the regression model Y = b1Xi + ei, where the error term is independent and normally distributed N(0,sigma^2). a) Find the

I need to use the regression model Y = b1Xi + ei, where the error term is independent and normally distributed N(0,sigma^2).

a) Find the least square estimator of b1

b) Find the likelihood function for the n sample observations on Y and obtain the maximum likelihood estimator of b1

c) Show that the maximum likelihood estimator of b1 is unbiased

If I can only get help for one of these, please be the first one because I am super lost on how to get the least square estimators, thank you :)

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