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.

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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