. .. Group B . . Group B ...... Group B Group B V V Group A Group A Group A Group A 0 0 0 (a) (b) (c) (d) a) If this model is fitted to the data set, which fitted coefficients, if any, would you expect to be significantly different from zero? What would be the signs of those nonzero coefficients? b) If terms with nonsignificant coefficients are removed from the model, what resulting equation describes Group A? Group B