If the numbers are sorted,
median will be the middle value if the list has odd numbers(like 5 numbers)
median will be the average of the middle 2 values if the list has even numbers(like 6 numbers, median will be average of 3 and 4)
If the questions is asking whether median 73 is in what range taking each ranges seperately, then the answer is 70-79. I dont think this is the question though as there is nothing really to find out here
But if the questions is asking whether median 73 is in what range taking all ranges into consideration(in total 73 scores, then the answer is 80-89 - total numbers of scores is 73 and the median will be the 37th score which falls in the 80-89 range.