12.36 Suppose you have an interaction model: 3! = ,6}. + 31261 + 32x2 + gxixz + a with 32 data points and we obtain the following results:J 333,), = we, 33:5: = 21, 33 = 10, 533 = 4.41 a] Find Hz and interpret.J b} Is the model adequate for predicting v? Test at a: = .0541 c) Use a graph to explain the contribution of the xix: term to the model. (J d} Is there evidence that 11 and 12 'nteract? Test at a: = 115.6 e] What is the marginal effect {holding everything else constant) of the 12 term?J {I