n psychology students took a standardized test. The scores are summarized in the GFDT below. Frequency 18 12 Scores 140-149 150-159 160-169 170-179 180-189 190-199 Scores less than 150 less than 160 less than 170 less than 180 less than 190 less than 200 15 The scores are also described in the cumulative table shown below. 20 41 answer= Frequency 18 30 45 59 79 n What is the missing value in the GFDT?

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