A un consultorio llegan pacientes con una tasa de cuatro pacientes por hora, si la llegada de pacientes sigue una distribución Poisson, responda las siguientes preguntas:

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A una estación de servicios llegan usuarios con una tasa de 45 usuarios cada 60 minutos, si la llegada de usuarios a dicha estación sigue una distribución Poisson, responda las siguientes preguntas:

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Hay 80 aspirantes, (mujeres, M y hombres, H) para un trabajo, 20 son integrantes del grupo A, 25 del grupo B y 35 del grupo C. Los números de mujeres (M) en los tres grupos son 4 en el grupo A, 14 en el grupo B y 24 en el grupo C. Una persona es seleccionada al azar para cubrir el puesto. Calcule las sguientes probabilidades: