Consider the following data for a dependent variable and two independent variables, and . 30 13 95 47 10 108 25 17 112 50 16 179 41 5 94 52 19 175 74 7 171 36 12 118 60 14 143 77 16 211 The estimated regression equation for these data is Here , , , and . a. Test for a significant relationship among , , and . Use . (to 2 decimals) The -value is . At , the overall model is . b. Is significant? Use (to 2.