Mrs. cox and mr. jones are in charge of the work-study program for oak high school. each teacher is in charge of supervising 10 students. they are comparing statistics for the two groups of students based on the hours worked per week. which statement is true? a) the mean for mrs. cox is greater than the mean for mr. jones. b) the median for mr. jones is greater than the median for mrs. cox. c) the median for mrs. cox is greater than the median for mr. jones. d) the interquartile range for mrs. cox is greater than the interquartile range for mr. jones.