2. Twenty beluga whales were randomly chosen from the MacKenzie Delta. For cach whale, liver selenium (X, with units ag/g dry weight) and tooth selenium (Y, with units were measured. The results are summarized as follows y=156.7 r-0.5273, SS(residual) 17573.3 a. (5 pts) Calculate the linear regression of Y on X. (find and by in y- + ng g dry weight) = 22.68, S 12.54, s38.04