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An administrator wishes to know what percentage of SAIT graduates are employed in public utilities, within 5%. To achieve 90% confidence in the results, how

An administrator wishes to know what percentage of SAIT graduates are employed in public utilities, within 5%. To achieve 90% confidence in the results, how many graduates must be surveyed to estimate the percentage employed in public utilities? [4 marks] if any one can and in 20 min max please

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