This explanation shows one way to solve the problem.
Describe the shape: The bars rise to a single peak and fall off on both sides, so the distribution is roughly symmetric - not skewed right.
Find the peak: The tallest bar is
[60,70) with
8 students.
Compare the intervals:
[50,60) has
5 and
[70,80) has
4, so more are in
[50,60), so this statement is true.
Check the count:
5+8+4=17 out of
20 is more than half (a majority), so the statement is true.
Final AnswerThe peak interval is [60, 70);The distribution is roughly symmetric;More students are in [50, 60) than in [70, 80);The majority of students scored between 50 and 80