New Period Accounts New Period Accounts New Period Accounts 1 199 9 6 231 11 280 2 213 7 247 12 274 3 210 00 8 251 13 279 4 227 9 252 14 287 5 234 10 266 15 309 b. Use trend-adjusted smoothing with a .3 and ẞ-2 to smooth the new account data in part a. What is the forecast for period 16?=