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using the formula nfpc= n0 1+(n0-1)/N How many children will be needed in the survey to determine the level of dental health among public elementary

using the formula nfpc= n0

1+(n0-1)/N

How many children will be needed in the survey to determine the level of dental health among public elementary school children in Community X, if the researcher would like that his estimate to be within 10% of the true value with a reliability level of 99%, if previous research shows a standard deviation of the dental caries score is 1.5?

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