120 psychology students took a standardized test. the scores are summarized in the gfdt below. scores frequency 140 - 144 16 145 - 149 10 150 - 154 10 155 - 159 15 160 - 164 14 165 - 169 55 the scores are also described in the cumulative table shown below. scores frequency less than 145 16 less than 150 26 less than 155 36 less than 160 less than 165 65 less than 170 120 what is the missing value in the cumulative gfdt?