ergonomic fix

jpurnell · Jun 11, 2024 · 58a2f0f · 58a2f0f
1 parent 9586521
commit 58a2f0f
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/.../xcode/package.xcworkspace/xcuserdata/jpurnell.xcuserdatad/UserInterfaceState.xcuserstate b/.../xcode/package.xcworkspace/xcuserdata/jpurnell.xcuserdatad/UserInterfaceState.xcuserstate
diff --git a/Sources/BusinessMath/Statistics/Probability Distribution/requiredSampleSize.swift b/Sources/BusinessMath/Statistics/Probability Distribution/requiredSampleSize.swift
@@ -84,10 +84,10 @@ public func requiredSampleSize<T: Real>(ci: T, stdDev: T, sampleMean: T, populat
 ///     print(result)
 ///
 /// Use this function when planning a survey or experiment where it's important to understand population trends.
-public func requiredSampleSizeProb<T: Real>(ci: T, prob: T, maxError: T, populationSize n: T?) -> T {
+public func requiredSampleSizeProb<T: Real>(ci: T, prob: T, maxError: T, _ populationSize: T?) -> T {
     let z = zScore(ci: ci)
     let sampleSize = (T.pow(z, T(2)) * prob * (T(1) - prob))/(T.pow(maxError, T(2)))
-	guard let population = n else { return sampleSize }
+	guard let population = populationSize else { return sampleSize }
 	let populationCorrectionNumerator = T(1) + (T.pow(z, T(2)) * prob * (T(1) - prob))
 	let populationCorrectionDenominator = (T.pow(maxError, T(2)) * population)
 	let finitePopulationCorrection = populationCorrectionNumerator / populationCorrectionDenominator