\\ myopenmath.com For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 3.1 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between [:] hours and C] hours on Statistics each week. b) 95% of the students spend between C] hours and C] hours on Statistics each week. c) 99.7% of the students spend between C] hours and C] hours on Statistics each week. Question Help: [3 Written Example 8 Message instructor Submit Question \\ Jump to Answer \\ 80/1 pt '0 5 3 4 (D Details