Finding the Median Study Hours

In a recent study, a researcher investigated the amount of time students at a university spent studying each week. The data collected from 50 students is as follows:

- 5 students studied for 5 hours

- 12 students studied for 10 hours

- 15 students studied for 15 hours

- 10 students studied for 20 hours

- 8 students studied for 25 hours

- 0 students studied for 30 hours

Based on this information, what is the median number of hours studied by these students?