The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of brumley statistical consulting inc., during the first quarter of 2013. frequent flier miles (000) number of employees 0 up to 3 5 3 up to 6 12 6 up to 9 23 9 up to 12 8 12 up to 15 2 total 50 a. how many employees were studied? b. what is the midpoint of the first class? c. construct a histogram. d. a frequency polygon is to be drawn. what are the coordinates of the plot for the first class? e. construct a frequency polygon. f. interpret the frequent flier miles accumulated using the two charts.