1. The calculation undertaken to estimate the model y = 0 + 1 X1 + 2 X2 + 50 Observations of the variables y, x1 and x2 produced the following summations: SST = 321.2, SSE = 259.0 a. Find SSR b. Calculate the standard error of Estimate c. Calculate the coefficient of determination. 2. The following additional output was provided by Minitab when Bill ran the multiple regression: SOURCE DF SS MS F Regression 4 3134.42 783.60 _____ Error 7 951.25 135.89 Total 11 4085.67 a. What is the observed value of F? b. At a significance level of 0.05, what is the appropriate critical value of F to use in determining whether the regression as a whole is significant? c. Based on your answers to (a) and (b), is the regression significant as a whole