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The sale of EpoxyShields asphalt repair product for the past 10 months is as shown below. If EpoxyShield uses 3- month moving average to forecast

The sale of EpoxyShields asphalt repair product for the past 10 months is as shown below. If EpoxyShield uses 3- month moving average to forecast sales:

Month 1 2 3 4 5 6 7 8 9 10

Sales 305 315 320 325 322 336 340 342 355 360

a) What are the forecasts for months 4-11?

b) What is the resulting MAE, MSE and MAPE values?

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