4.5 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 3,000 2 4,000 3 3,400 4 3,800 5 3,700 a) Forecast the mileage for next year using a 2-year moving average. b) Find the MAD based on the 2-year moving average forecast in part (a). (Hint: You will have only 3 years of matched data.) c) Use a weighted 2-year moving average with weights of .4 and .6 to forecast next year