please show work, answer is not 2.8, already tried it.

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: a) Using a 2-year moving average, the forecast for year 6= whole number). miles (round your response to the nearest b) If a 2-year moving average is used to make the forecast, the MAD based on this = one decimal place). (Hint: You will have only 3 years of matched data.) miles (round your response miles (round your response