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 oftenth grade students that have reading skills at or below theeighth grade level. In an earlier study, the population proportionwas estimated to be 0.22.
How large a sample would be required in order to estimate thefraction of tenth graders reading at or below the eighth gradelevel at the 80%confidence level with an error of atmost 0.02? Round your answer up to the next integer.