Consider the following data for a dependent variable y and two independent variables, z1 and z2; for these data SST = 15,182.9, and SSR = 14,052.2. 30 12 94 47 10 108 25 17 112 51 16 178 40 94 51 19 175 74 170 36 12 117 59 13 142 76 16 211 Round your answers to three decimal places. a. Compute R. b. Compute R. c. Does the estimated regression equation explain a large amount of the variability in the data? - Select your answer Explain. Hint: If R is greater than 70%, the model explains a large amount of variability. Since the adjusted coefficient of determination is - Select your answer - v than 70%, the model Select your answer - v explain a large amount of variability.