I need a professional answer for part c.

= Homework: Po... C Question 7, Problem 4.9... Part 3 of 4 > HW Score: 18.38%, 7.35 of 40 points Points: 1 of 2 Lenovo uses le 21-01 Cup in some on ils laptop computers. The prices on We chip uuning uie last 12 months were as JONOWS. Month January February March April May June Price Per Chip $1.90 $1.61 $1.60 $1.85 $1.90 $1.95 Month July August September October November December Price Per Chip $2.00 $1.75 $1.70 $1.50 $1.60 $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 Aug Sep Oct Nov Dec Apr 1.61 May 1.73 Forecast $1.76 1.88 1.93 1.98 1.88 1.73 1.60 1.55 b) Using a 3-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Jun Jul Month Aug Oct Nov Dec Apr $1.70 May 1.69 Sep 1.90 1.78 1.90 Forecast 1.95 1.82 1.65 1.60 (round your response to three decimal places c) The mean absolute deviation based on a 2-month moving average of March through December is $