I need a professional answer for part c

0.67 OT 2 Lenovo uses uie LA-01 cup in some on its laptop computers. The prices for uie cup uuring uie last 12 monuis were as follows. Month January February March April May June Price Per Chip $1.80 $161 $1.60 $1.85 $1.90 $1.89 Month July August September October November December Price Per Chip $ 1.80 $1.70 $1.70 $1.50 $1.50 $1.75 This exercise contains only parts a, b, and c. a) Using a 2-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Mar Jun Jul Apr 1.61 May 1.73 Sep Oct Nov Dec Forecast Aug 1.85 $1.71 1.88 1.90 1.75 1.70 1.6 1.5 b) Using a 3-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month May Jun Jul Apr $1.67 Oct Nov Forecast Aug 1.86 Sep 1.80 1.69 1.78 1.88 Dec 1.57 1.73 1.63 c) The mean absolute deviation based on a 2-month moving average of March through December is (round your response to three decimal places)