Consider a time series for which Holt's trend corrected exponential smoothing is the appropriate model with the least squares line given by , = 239.0 +11.37t. Let a = 0.4 and y = 0.3 be a reasonable choice of the smoothing constants. Give the initial estimates of the level L and the growth rate &. Consider a time series for which Holt's trend corrected exponential smoothing is the appropriate model with the least squares line given by , = 239.0 +11.37t. Let a = 0.4 and y = 0.3 be a reasonable choice of the smoothing constants. Give the initial estimates of the level L and the growth rate &.