Question

In spring 2015, three separate studies on the fitness level of tenth graders were  conducted in the city of Mistwick. In each study, every student in a group of tenth  graders took the same fitness test and received a score on it. The possible scores on  the fitness test are the whole numbers from 50 to 100, inclusive. The distribution of the scores for each of the' studies is shown in the table below.

Score range	Study I	Study II	Study III
50-59	24	50	88
60-69	36	67	67
70-79	22	52	65
80-89	11	14	41
90-100	7	17	39
Mean score	68.6	68.7	70.4
Total number of participants	100	200	300

The participants for the studies were selected as follows.
• For Study I, 100 tenth graders were selected at random from all tenth graders in Mistwick.
• For Study II, 200 tenth graders were selected at random from all tenth graders in Mistwick.
• For Study III, 300 tenth graders from Mistwick volunteered to participate.
No tenth grader participated in more than one of the three studies.
Which of the following could be the median score in Study III?

1. 59
2. 68
3. 70
4. 82