Wyoming Parts has collected information on overhead costs and unit output for the past 12 months, reported here. Month 1 2 3 4 5 6 7 8 9 10 11 12 Overhead $ 695,300 $1,021,896 $ 907,771 $1,068.068 $ 1,094,722 $ 930.542 $ 961,657 $ 1,076,349 $ 1,193,767 $ 658,003 $ 1,112,695 $1,034,590 Units 110,000 139,000 124,700 160,100 125, 700 128,300 108,000 136,100 160,100 94,100 138,500 145,200 Required: a. Draw a scattergraph relating overhead costs to the number of machine-hours. b. Using the high-low method, estimate overhead costs for a month when output is expected to be 156,000 units. (Do not round intermediate calculations and round your final answer to nearest whole dollar amount.) Overhead cost