to 1 al place) QUESTION 28 Suppose the following are the seasonal indices for the first three quarters of the year for a quarterly series Quarter QI Q2 70.8 89.9 108.5 seasonal indices should average 100 so you should be able to infer the seasonal index for Q4 Furthermore, suppose that the from a regression of the deseasonalized series on Time are given below Coefficients 2,426 69.2 What is the forecast for period 76, if period 76 is a Q1? (please round your ansver to 1 decimal place) QUESTION 29