Final answer:
The 50th percentile is also known as the median. It is the value that divides the data into two equal halves.
Step-by-step explanation:
The 50th percentile is also known as the median. It is the value that divides the data into two equal halves. In this case, the interval that contains the 50th percentile is option b) 25-50%. This means that 50% of the data falls below this interval and 50% falls above it.