The amount of time (in minutes) that Lumen University students spent on social media per day are reported to be normally distributed. The normal curve is presented below. 48 53 58 63 68 73 78 Time (in minutes) spent on social media per day Use the Empirical Rule to answer the following questions. a. The mean is 63 . b. The standard deviation is 10 . c. % of Lumen University students spend between 58 and 68 minutes per day on social media. d. 68 % of Lumen University students spend between 53 and 73 minutes per day on social media. e. % of Lumen University students spend between 48 and 78 minutes per day on social media. f. % of Lumen University students spend between 63 and 68 minutes per day on social media. g. What percentage of Lumen University students spent less than 63 minutes on social media per day