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 IBM $181.64 181.29 AMZN $629.36 635.00 March 205.33 558.56 April 222.41 552.10 May 187.09 487.42 June 213.69 482.38 July 249.12 609.69 August 190.63 531.96 September 225.83 509.84 October 215.91 612.84 November 201.29 581.99 December 178.70 667.90