Internal calculation: single proportion precision (absolute or relative)

n = Z^2 * p(1-p) / d^2 for absolute precision; for relative precision the margin is epsilon * p. Prevalence outside 10-90% triggers a convention hint (Bhardwaj 2024 p.2558).

Usage

calculate_single_proportion(p, precision, precision_type, alpha)

Arguments

p

Expected proportion

precision

Margin of error d (absolute) or epsilon (relative)

precision_type

"absolute" or "relative"

alpha

Type I error (two-sided CI)

Value

List consumed by as_sample_size_result()