Consider the Tasty Cola monthly sales data of Table 7.1 months y months y months y 1 189 13 244 25 298 2 229 14 296 26 378 3 249 15 319 27 373 4 289 16 370 28 443 5 260 17 313 29 374 69 431 18 556 30 660 660 19 831 31 1004 8 777 20 960 32 1153 9 915 21 1152 33 1388 10 613 22 759 34 904 11 485 23 607 35 715 12 277 24 371 36 441 Use Multiplicative Holt Winter Smoothing Method with initial smoothing constants of alpha = 0.1, gamma 0.1 and delta = 0.1 a. Set up an Excel spreadsheet to find smoothing constant that minimize SSE b. Find initial values for the 12 seasonal factors. C. Use solver to find smoothing constants minimizing SSE d. Compute point forecasts and prediction intervals for the first four months of the fourth year