The school board administered a reading test to all eighth-grade students at high achievers charter school and determined that 10%, percent of them were reading below grade level.
based on this data, which of the following conclusions are valid?

choose 1
a 10% percent of students in this sample are reading below grade level, but we cannot conclude anything about the eighth-grade students at hacs.

b 10% percent of all students at hacs are reading below grade level.

c 10% percent of all eighth-grade students at hacs are reading below grade level.