When determining the sample size (n)for a confidence interval for ρ,if you are using a previous sample,use the reasonable value of ρ that is closest to 0.25.

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When determining the sample size for a confidence interval for a proportion (ρ), the most conservative estimate is to use ρ = 0.5, as it maximizes the product ρ(1-ρ) and thus the required sample size.

When Determining the Sample Size (N)for a Confidence Interval for ρ,If