Los parámetros de una variable estadística normal son N (15. 4 4. 8), los cuales siguen una distribución aproximadamente normal si se extrae una muestra de 400 individuos. Encuentra el intervalo característico para las medias muéstrales ̅ correspondientes a un nivel de confianza del 99% realiza el gráfico.
En resumen
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Te dejo una foto conel procedimiento : ).
1 y 1 / 2 : 1 + 1 / 2 = 3 / 2 40h • X + 4h • (3 / 2)•X = $276 40h•X + 6h•X = $276 46h•X = $276 X = $6 / h.