Please help with the following question:

PF'PP'F' Suppose we observe a pair {sh'yi}, -i = 11.21.. . . ,n. We t a linear regression model with no intercept term #12 = .33; + 12 where sir-3d Nfmg]. Write down the RSS {residual sum of squares] for the regression model. Find the least square estimator ,3 of ,3. Show your worlcing. Find the expected value of the least square estimator ,8. Show your working. Find the varianoe of the least square estimator 15' Show your working. State the distribution of the least square estimator ,3