For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. Asurvey was done on 21 students, and the distribution of total stud}:r hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 3.3 hours. Use the Empirical Rule to answer the following questions. a] 68% of the students spend between C] hours and C] hours on Statistics each week. b] 9596 of the students spend between C] hours and C] hours on Statistics each week. c} 99.?96 of the students spend between C] hours and :l hours on Statistics each week