Question: Suppose that we use an Exponential smoothing forecast with alpha=0.45 to forecast the value of the time series during period 6. What is the value

Suppose that we use an Exponential smoothing forecast with alpha=0.45 to forecast the value of the time series during period 6. What is the value of the RMSE (root mean square error) of this forecast, rounded to the nearest tenth?

Period	Value ($)
1	34.65
2	32.32
3	30.59
4	28.59
5	30.87
6

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