need help with part B please.

a. Obtain the linear trend equation for the following data on new checking account: 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 decimal places.) Period New Accounts Period New Accounts Period New Accounts 200 235 281 217 241 275 211 250 282 228 288 235 314 UAWN + 8.100 t Y = Y16 = Y17 = Y18 = Y19 = 195.16 308.28 315.35 322.42 329.49 b.Use trend-adjusted smoothing with a = .2 and = 1 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 St value for Period 5) using the textbook formulas or Excel template. (Round the "Trend"values (Tt) to 3 decimal places and all other intermediate forecast values (TAFt and St) to 2 decimal places. Round your final answer to 2 decimal places.) Forecast for period 16