Problem 8-17 Bollinger Bands (L04, CFA1) From the data below for Apple (AAPL) stock, calculate the upper and lower Bollinger bands, which represent plus (or minus) two standard deviations of the 20-day simple moving average added (subtracted) from the 20-day simple moving average. If the daily price approaches or exceeds the upper Bollinger band, traders will look for a continued upward movement in the stock price. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Date AAPL Close Lower Bollinger Band Upper Bollinger Band 3/26/2019 3/27/2019 3/28/2019 3/29/2019 4/1/2019 4/2/2019 4/3/2019 4/4/2019 4/5/2019 4/8/2019 4/9/2019 4/10/2019 4/11/2019 4/12/2019 186.80 188.48 188.73 189.96 191.25 194.03 195.36 195.70 197.01 200.11 199.51 200.63 198.96 198 88 Standard Deviation 20-Day Simple of 20-Day Moving Moving Average Average 180.89 3.41 18151 3.61 182.19 3.81 182.97 4.01 183.72 4.21 184.49 4.40 185.41 4.58 186.46 4.73 187.62 4.87 188,82 5.00 189.88 5.11 190.81 5.20 191.75 5.26 192.52 5.28