Ten observations were provided for a dependent variable y and two independent variables x1 and x2; for these data, SST = 15,1816 and 55R = 14,0611. (a) Compute R2. (Round your answer to three decimal places.) R2 = [] x (b) Compute R82. (Round your answer to three decimal places.) R32 = \"' '] x (c) Does the estimated regression equation explain a large amount of the variability in the data? Explain. (For purposes of this exercise, consider an amount large if it is at least 55%. Reund your answer to one decimal place.)