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a. Obtain the linear trend equation for the following data on new checking accounts at Fair Savings Bank and use it to predict expected new checking accounts for periods 16 through 19. (Round your intermediate calculations and final answers to 2 decimal places.) National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Click here for the Excel Data File 0. Forecast September sales volume using each of the following: (1) The naive approach. (2) A five-month moving average. (Round your answer to 2 decimal places.) (3) A weighted average using 0.60 for August, 0.10 for July, and 0.30 for June. (Round your answer to 2 decimal places.) (4) Exponental smoothing with a smoothing constant equal to 0.10, assuming a March forecast of 15(000). (Round your intermediate forecast values and final answer to 2 decimal places.) (5) A linear trend equation. (Round your intermediate calculotions and final answer to 2 decimal places.)