Question: The following inventory pattern has been observed in the Zahm Corporation over 12 months: Use both three-month and five-month moving-average models to forecast the inventory

The following inventory pattern has been observed in the Zahm Corporation over 12 months:

Use both three-month and five-month moving-average models to forecast the inventory for the next January. Use root-mean-squared error (RMSE) to evaluate these two forecasts.

MonthInventory Month Inventory January February March April May June 1,544 1,913 2,028 1,178 1,554 1,910 July August September October November December 1,208 2,467 2,101 1,662 2,432 2,443

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