Problem 8-3 Simple Moving Averages (LO4, CFA1) The table below shows the closing monthly stock prices for IBM and Amazon. Calculate the simple three-month moving average for each month for both companies. (Input all amounts as positive values. Do not round intermediate calculations. Round your answers to 2 decimal places.) January February March April May June July August September October November December IBM $ 172.64 175.29 186.43 202.46 194.29 206.79 229.17 209.08 218.63 214.11 194.54 174.50 AMZN $ 607.61 618.80 579.71 546.10 518.62 500.38 605.19 538.71 513.74 597.69 595.04 651.40 IBM AMZN March April | May June July August September October November December