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pls help a & b.

Check my work Problem 3-9 (Static) 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.) Period 1 2 3 4 5 New Accounts 2ee 214 211 228 235 Period 6 7 8 9 1e New Accounts 232 248 250 253 267 Period 11 12 13 14 15 New Accounts 281 275 280 288 310 Click here for the Excel Data File Y Y16 Y17 Show Chapter03-09.xlsx DELL b. Use trend-adjusted smoothing with a = 0.3 and B = 0.2 to smooth the new account data in part a What is the forecast for period 16? Compute the initial trend estimate (T) for Period 5 as follows: (Period 4 data - Period 1 data)/3. Then compute the initial trend-adjusted forecast (TAF) for Period 5 as follows. Period 4 data - Initial trend estimate for Period 5 Then compute all remaining values (including the Sy value for Perlod 5) using the textbook formulas or Excel template. (Round the "Trend" values to 3 decimal places and other values to 2 decimal places for intermediate calculations. Round your final answer to 2 decimal places.) Forecast for period 16 lsx Chapter03-09.xlsx DELL