Consider the simple linear model Y = tically distributed with mean 0 and variance o?. Note: Must use the Linear combination of Y method! See Example 12 of 3 - Simple Linear Regression (Inference). Bo...

please help with sub part c

Extracted text: Consider the simple linear model Y = tically distributed with mean 0 and variance o?. Note: Must use the Linear combination of Y method! See Example 12 of 3 - Simple Linear Regression (Inference). Bo + B1 + €, e are independent, iden- a) Show that the least square estimator Bo Ỹ - Bī is an unbiased of B- b) Show that (1) Varl&] = i o? (ii) and attains the minimum n Σ, (τ- )>. variance among all estimates that are linear combination of the response variable Y. c) Show that the test statistic t = is equivalent to t= where S.E(B)) = %3D S.E(§)' VE (; – #)² 1-r2 - п-2