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SAMPLE SIZE, CONFIDENCE LEVELS AND SAMPLING ERROR. N S (95%) S (99%) 50 44 50 100 79 99 200 132 196 500 217 476 1,000 278 907 2,000 322 1,661 5,000 357 3,311.
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SAMPLE SIZE, CONFIDENCE LEVELS AND SAMPLING ERROR N S (95%) S (99%) 50 44 50 100 79 99 200 132 196 500 217 476 1,000 278 907 2,000 322 1,661 5,000 357 3,311