Question: please help fill out chart and supporting questions Problem 18-08 (Algorithmic) Refer ogain to the gasoline sales time series deta in the following table. a.

please help fill out chart and supporting questions

Problem 18-08 (Algorithmic) Refer ogain to the gasoline sales time series deta in the following table. a. Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent; and 1/76 for third most recent, compute a three-week weighted moving averagn for the vime series. Use raunded for two decimal places values for intermediate calculations. Use minus sign for negative values. Arinker to twa decinal piacest c. Suppose you are allowed to choose any weights as long as they sum to 1. Could you always find a set of weights that would make the MSE smaller for a weighted moving average than for an unweighted moving average? Why or why not? The input in the box below will not be graded, but may be raviewed and considered by your instructor

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