A large random sample of American students in seventh grade showed that 20% of them were reading
below grade level.
Based on this data, which of the following conclusions are valid?
Choose 1 answer:
(A)
About 20% of all American students in seventh grade were reading below grade level.
20% of this sample was reading below grade level, but we cannot conclude anything about
the population.
(C)
About 20% of all American students were reading below grade level.