Following is a simple linear regression model: yi = Bo + Bixi + Ei The following results were obtained from statistical software: Syx (regression standard error) = 5.173 SST = 2,633.09 n (total observations) = 35 Variable Parameter Estimate Std. Err. of Parameter Est. Constant -0.0039 0.0015 X 0.0021 0.0009 The Coefficient of Determination of the linear regression model, R2, is (keep three decimals): O 0.505 O 0.665 1.321 O 0.831