All of the students at north high school took a benchmark test. when the administration analyzed the students' grades, they found that the grades were normally distributed and that [blank] of the students received grades with z-scores between 0.15 and 0.85.

24.2%  students received grades with z-scores between 0.15 and 0.85

Step-by-step explanation:

We are given the following in the question:

The grades of a benchmark test for North High School were normally distributed.

WE have to find the percentage of students that  received grades with z-scores between 0.15 and 0.85.

Formula:

P(score between 0.15 < z < 0.85)

24.2%  students received grades with z-scores between 0.15 and 0.85

c: lkllmn.

hope it's you