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Usted se la ha asignado data proveniente de 15 cilindros de concreto a los cuales se determino la capacidad en compresin del concreto a los

Usted se la ha asignado data proveniente de 15 cilindros de concreto a los cuales se determino la capacidad en compresin del concreto a los 28 das segn requiere la especificacin del ASTM C39 (ASTM Standard Test Method C39: Compressive Strength of Concrete Cylinders), ver Tabla P2 de datos asignados a cada estudiante). Con la data usted deber determinar lo siguiente: a) Valor promedio E[X] b) Variancia y desviacin estndar, V[X] y V(V[X]), respectivamente Si tomamos que la capacidad en compresin del concreto es una variable aleatoria X y se ajusta bien a una distribucin normal determine los siguiente: c) P(X 3000 psi) d) P(X 4000 psi) e) P(X 5000 psi) f) P(3500 psi X 4500 psi) CECEE

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