The carbondale hospital is considering the purchase of a new ambulance. the decision will rest partly on the anticipated mileage to be driven next year. the miles driven during the past 5 years are as follows:
year mileage

1 3000
2 3950
3 3450
4 3800
5 3800

(a) using a 2-year moving average, the forecast for year 6 = 37503750 miles (round your response to the nearest whole number).
(b) if a 2-year moving average is used to make the forecast, the mad based on this = 41.6741.67 miles (round your response to one decimalplace). (hint: you will have only 3 years of matched data.)
(c) the forecast for year 6 using a weighted 2-year moving average with weights of 0.450.45 and 0.550.55 (the weight of 0.550.55 is for the most recent period) = nothing miles (round your response to the nearest whole number).