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I need help with an econometrics homework. Specifically, I need help figuring out how to derive the variance of yhat (Problem 2b), and I need my
I need help with an econometrics homework. Specifically, I need help figuring out how to derive the variance of yhat (Problem 2b), and I need my answers for the other problems checked, focusing on how to get p-values in problems 1d and 4d (what am I doing wrong, if anything?). The instructions say to figure out the linear regression values "by hand" in excel (i.e. doing it step-by-step instead of just running a linear regression). You don't have to worry about that, as I already did that work and you can double check by just simply running the regression yourself. The original excel table only had the country names, the xi and yi values (corruption and GDP per capita) -- all of the rest is my own work. I will be attaching the homework and excel tables
