4. Quarterly production of compact fluorescent lightbulbs (in thousands) were collected over 3 years. The table below presents the data along with information created to deseasonalize the data and make projections for the future. The estimated trend was given by T_t=1506.47+125.4t. 4-Qtr Seasonal Ratio of Unadjust Adjusted Trend Centered ed Seasonal ly Period Year Quarter Quantity Original Seasonal Projectio Forecast Moving Seasonal Index Adjusted to MA Index n Average Index Series 1622 1.060 1530.68 1631.87 1729.23 N 1872 1.119 1757.27 1966.16 3 1824 1821.13 1.002 1.003 1.003 1819.24 1882.67 1887.6 4 1638 0.824 0.821 0.819 0.819 2000.37 2008.08 1644.31 2279 2153.88 1.058 1.063 1.060 2150.69 2133.48 2260.77 2 2544 2302.63 1.122 1.119 1.119 2273.72 2258.88 2527.39 3 2485 2462.13 1.009 1.003 2478.51 2384.28 2390.53 W W W W N N N N P PP 4 2167 2649 0.818 0.819 2646.40 2509.68 2055.05 3026 2835.5 1.067 1.060 2855.63 2792.3 3292 2889.75 1.139 1.119 2942.25 2760.49 3088.63 3229 3220.57 2885.89 2893.45 4 1857 0.819 2267.82 3011.29 2465.79 1.060 3136.69 14 1.119 3262.10 WN 15 4 1.003 3387.50 16 4 4 0.819 3512.90