The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or bel

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The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.17. How large a sample would be required in
order to estimate the fraction of tenth graders reading at or below
the eighth grade level at the 80% confidence level with an error of
at most 0.03? Round your answer up to the next integer.