Consider the situation in which the mass, y gram, of a chemical is related to the time, x minutes, for which the chemical reaction has been taking places, according to the table: Time, x min 30 28 32 25 25 Mass, y g 25 30 27 40 42 25 22 24 35 40 40 50 45 30 25 (a) Given that Sxx - = 288.4, Syy 736.4, and Sxy = -390.4. Find the estimated regression equation. Round your answers to 4 d.p. [7] (b) Interpret the slope coefficient. [5] (c) Find SSE. Then estimate the value of . Round your answers to 3 decimal places. [7] (d) Compute the sample coefficient of determination using formula. Round your answers to 4 decimal places. Interpret the value obtained. [6]