Unobtanium is a highly valuable room-temperature superconductor, which humans mine on the moon Pandora (in James Cameron's movie Avatar). The table below shows the price of unobtanium (in million dollars per kilogram) for the period between the years 2154 and 2158. Year Price 2154 21.34 2155 20.70 2156 18.63 2157 17.51 2158 16.98 If an analyst uses the exponential smoothing method with a smoothing constant of w=0.3, what will be his/her forecast for the year 2163? Your answer must be accurate within +0.005. Válasz 18.76

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