When inputting an answer, round your answer to the nearest 2 decimal places (for VARIANCE round to 4 decimal places). If you need to use a calculated number for further calculations, DO NOT round until after all calculations have been completed. For the final answer, Round to 2 decimal places (for VARIANCE round to 4 decimal places). Q4) A stock has an expected retum of 19.74% and a standard deviation of 14.80%. For this stock, what are the: a) Upper range of 68% confindence interval ( 0.5 points) b) Lower range of 68% confindence interval: ( 0.5 points) c) Upper range of 95% confindence interval: ( 0.5 points) d) Lower range of 95% confindence interval: ( 0.5 points) e) Upper range of 99% confindence interval: ( 0.5 points) f) Lower range of 99% confindence interval: ( 0.5 points)