Consider the following time series data:

Week	1	2	3	4	5	6	7
Value	23	15	20	12	18	22	15

(b)	Develop a three-week moving average for this time series. Compute MSE and a forecast for week 8.
	If required, round your answers to two decimal places. Do not round intermediate calculation.
	MSE:
	The forecast for week 8:
(c)	Use = 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for week 8.
	If required, round your answers to two decimal places. Do not round intermediate calculation.
	MSE:
	The forecast for week 8:
(d)	Compare the three-week moving average forecast with the exponential smoothing forecast using = 0.2. Which appears to provide the better forecast based on MSE?
	- Select your answer -3-week moving averageexponential smoothingItem 7
(e)	Use trial and error to find a value of the exponential smoothing coefficient that results in the smallest MSE.
	Do not round intermediate calculations. Use a two-decimal digit precision for the exponential smoothing coefficient.
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