The monthly sales for Telco Batteries, Inc., were as follows:

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec
Sales	21	20	15	12	13	18	15	19	19	22	23	24

This exercise contains only parts b and c.a) The forecast for the next month (Jan) using the naive method =

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sales (round your response to a whole number).b) The forecast for the next period (Jan) using a 3-month moving average approach =

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sales (round your response to two decimal places).