The following data show the quarterly sales of a major auto manufacturer for the years I through 3. Use multiplicative method to answer the following questions. Year Quarter Sales 160 180 2 3 190 4 170 200 210 260 3 4 230 3 210 2 3 240 290 4 260 26. The equation for the trend line of yearly sales is F,= 567 + 150t. What is the prediction for the sales in year 4? a. <1000 b. Between 1000 and 1100 Between 1100 and 1200 d. >1200 с. 27. What is the seasonal index for quarter 4 in year 1? a. <0.8 b. Between 0.8 and 0.9 Between 0.9 and 1.0 с. d. >1.0 28. What is the average seasonal index for quarter 1? <0.8 b. a. Between 0.8 and 0.9 с. Between 0.9 and 1.0 d. >1.0

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