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 Apr May June July August September October November December IBM $ 173.84 176.09 188.95 205.12 193.33 207.71 231.83 206.62 219.59 214.35 195.44 175.06 AMEN 5 610.51 620.96 576.89 546.90 514.46 497.98 605.79 537.81 513.22 599.71 593.30 653.60 IBM AMZN March April May June July August September October November December