Mathematics, 03.11.2019 21:31 bestsonever698

Alarge random sample of american students in seventh grade showed that 20%20\% 20% 20, percent of them were reading below grade level.
based on this data, which of the following conclusions are valid?
a.20% of all american students in seventh grade were reading below grade level.
b. 20% of this sample was reading below grade level, but we cannot conclude anything about the population.

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