Problem 8-3 Simple Moving Averages (LO4, CFA1) The table below shows the closing monthly stock prices for lm 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 IBM $ 178.04 178.89 197.77 214.43 189.97 210.93 241.14 198.01 222.95 215.19 198.59 177.82 AMZN $ 620.66 628.52 567.02 549.70 499.90 489.58 607.89 534.66 511.40 606.78 587.21 661.30 July August September October November December IBM AMZN March April May June July August September October November December