Please help me my homework

X X- X (x - ) 2 y - y ( x - 7) (1 -7) O 6 W/ N 2 3 4 0 Ex = Eyi = E( x, - 5) = E (x, - 7)= = E(vi -7) = E(x, - 7) ( 1 - 7) = (a) Complete the entries in the table. Put the sums in the last row. What are the sample means x and y? (b) Calculate b, and by using (2.7) and (2.8) and state their interpretation. (c) Compute Efix,, Ex,yi. Using these numerical values, show that E(x; - 7)? = Ex - Nx and E(x; - x) (yi - y) = Exyi - Nxy (d) Use the least squares estimates from part (b) to compute the fitted values of y, and complete the remainder of the table below. Put the sums in the last row