QUESTION 1 41 points Save Answer Use least square regression to fit a straight line to the following data taken from the conductance (S/m) of a material with respect to temperature ("C) of a composite material used to absorb heat. Determine the conductance C(t) at the temperature of T = 21.5.C using the derived linear regression function and the correlation coefficient r. (Answers should be in 2 decimal places) X f(x) x2 y2 xy 2.5 7 3.5 6.5 5 5.9 6 48 7.5 4.5 10 4 12.5 2.9 15 2.5 17.5 2.1 20 1.3 sum x sum y sum x2 sum y2 sum xy X (ave) = : Y (ave) = ; AO = A1 = r= f(21.5) =