Forecasts and actual sales of MP3 players at Just Say Music are as follows:

Month	Forecast	Actual Sales
March	170	160
April	237	246
May	206	187
June	253	237
July	264	244
August	260	220
September	290	240
October	258	164

MSE values based on the two- and three-period moving average are 1,090.08 and 1,403.04, respectively.

Find the best single exponential smoothing model by evaluating the MSE from 0.1 to 0.9, in increments of 0.1. Do not round intermediate calculations. Round your answers to two decimal places.

Alpha MSE

0.10

.20.

.30

.40.

.50

.06

.70

.80

.9