For the data below, the regression model Y^i=642.1125+2.7755X1i0.1882X2i uses total staff present and remote hours to predict standby hours. Develop a regression model to predict standby hours that includes total staff present, remote hours, and the interaction of total staff present and remote hours. Complete parts (a) and (b) below. Click the icon to view the data. a. At the 0.05 level of significance, is there evidence that the interaction term makes a significant contribution to the model? Let the interaction variable be X3. What are the null and alternative hypotheses for this test? A. H0:3=0 B. H0:3=0 H1:3=0 H1:3>0 C. H0:30 D. H0:30 H1:30 E. H0:3=0 F. H0:3=0 H1:3