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Mathematics, 28.09.2021 01:00 carolinaleija12

1. En unas pruebas de alcoholemia se ha observado que el 9% de los conductores controlados dan positivo en la prueba y que el 18% de los conductores controlados no llevan puesto el cinturón de seguridad. También se ha observado que las dos infracciones son independientes. Un guardia de tráfico para cinco conductores al azar. Si tenemos en cuenta que el número de conductores es suficientemente importante como para estimar que la proporción de infractores no varía al hacer la selección.

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