Formulario.docx

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PARAMETRO n>30 N=infinita n>30 N=finita N<=30 N=infinita n<=30 N=finita n>30 o n<=30 N=infinita n>30 o n<=30 N=finita

n= muestra piloto n optima= muestra optima N =población s=desviación estándar z o t =nivel de confianza (según tablas) p= probabilidad de éxito q= probabilidad de fracaso E =error muestral o error en la precisión

FORMULA 𝑠2𝑧2 𝐧 optima = 2 𝐸 𝑁𝑠 2 𝑧 2 𝐸 2 (𝑁 − 1) + (𝑠 2 𝑧 2 ) 𝑠2𝑡2 n= 2 𝐸 𝑁𝑠 2 𝑡 2 𝐧 optima = 2 𝐸 (𝑁 − 1) + (𝑠 2 𝑡 2 ) pq𝑧 2 n optima = 2 𝐸 Npq𝑧 2 𝐧 optima = 2 𝐸 (𝑁 − 1) + (pq𝑧 2 ) 𝐧optima =

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