test scores for the 31 members of the algebra class are represented in the histogram. how many students…

test scores for the 31 members of the algebra class are represented in the histogram. how many students scored in the interval 80 ≤ s < 99?\na. 17\nb. 13\nc. 34\nd. 20

test scores for the 31 members of the algebra class are represented in the histogram. how many students scored in the interval 80 ≤ s < 99?\na. 17\nb. 13\nc. 34\nd. 20

Answer

Explanation:

Step1: Identify relevant bars

The bars for scores 80 - 89 and 90 - 99 are relevant.

Step2: Sum up frequencies

The frequency of 80 - 89 is 8 and of 90 - 99 is 12. So, $8 + 12=20$.

Answer:

D. 20