Question

For the following frequency distribution of exam scores, how many students had scores lower than X = 75?

X f
95-99 6
90-94 3
85-89 4
80-84 5
75-79 2
70-74 1

Answer 1

Step-by-step explanation:

scores lower than 75 means 74, 73, 72, ...

if you made no typo, we see that

6 students had a scores of 95 to 99 (nobody had 100).

3 students had scores of 90 to 94.

4 students had scores of 85 to 89.

5 students had scores of 80 to 84.

2 students had scores of 75 to 79.

and finally 1 student had a score somewhere between 70 and 74.

nobody had a lower score.

so, I am sure it is clearly visible now : the answer is

1 student had a score lower than X = 75.